Backend DevelopmentC#.Net TutorialHow to solve the problem of calling Hikvision SDK when making ActiveX controls in C#How to solve the problem of calling Hikvision SDK when making ActiveX controls in C#
这个事情就是一个坑，耽误了两周时间，之前并没有做过ActiveX这玩意，现在客户需求如此，只能说是在网上看着教程做了。
事情是这样的，有一台海康威视的摄像头，客户需要一个ActiveX控件嵌入到网页中，通过点击按钮开始录制和结束录制来进行视频的录制和保存，关于海康摄像头的二次开发在此就不多说了，可以参考SDK中的说明。
直接上流程：
1.开发环境：
VS2010,这个打包方便，之前用VS2013打包的，总是调用不了，不知道原因是什么；SDK是32位的，用64位的在Winform中可以正常使用，在网页中使用控件时会报错。
2.新建项目：
新建一个类库项目，如下：
右键点击项目，添加“用户控件”，如下：
界面拖控件，如下：
控件代码如下，其中Guid是“工具”->“创建GUID”自动生成的，#region->#endregion折叠部分是实现的IObjectSafety接口
using System;
namespace VideoHelper
{
[System.Security.SecuritySafeCritical]
public class Videos
{
private bool m_initSDK = false;
/// <summary>
/// 正在录制
/// </summary>
private bool m_Record = false;
private uint LastErr = 0;
private Int32 m_RealHandle = -1;
private Int32 m_lUserID = -1;
public IntPtr handle { get; set; }
public bool Initialize(string ip = "192.168.1.64", int port = 8000, string username = "admin", string password = "8910jqk#")
{
try
{
m_initSDK = CHCNetSDK.NET_DVR_Init();
if (m_initSDK)
{
CHCNetSDK.NET_DVR_SetLogToFile(3, "C:\\SdkLog\\", true);
//设备参数结构体
CHCNetSDK.NET_DVR_DEVICEINFO_V30 DeviceInfo = new CHCNetSDK.NET_DVR_DEVICEINFO_V30();
//注册设备
m_lUserID = CHCNetSDK.NET_DVR_Login_V30(ip, port, username, password, ref DeviceInfo);
return m_lUserID >= 0;
}
return false;
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("Initialize:" + ex.Message);
return false;
}
}
public bool Start(IntPtr handle, string filename)
{
try
{
CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
lpPreviewInfo.lChannel = 1;
lpPreviewInfo.dwLinkMode = 0;
lpPreviewInfo.dwStreamType = 0;
lpPreviewInfo.bBlocked = true;
lpPreviewInfo.dwDisplayBufNum = 15;
lpPreviewInfo.hPlayWnd = handle;
IntPtr pUser = IntPtr.Zero;//new IntPtr();
//获取实时视频流
m_RealHandle = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, null, pUser);
if (m_Record == false)
{
CHCNetSDK.NET_DVR_MakeKeyFrame(m_lUserID, 1);
if (!CHCNetSDK.NET_DVR_SaveRealData(m_RealHandle, filename))
{
LastErr = CHCNetSDK.NET_DVR_GetLastError();
return false;
}
else
{
m_Record = true;
return true;
}
}
else
{
return false;
}
}
catch
{
return false;
}
}
public bool End()
{
if (m_Record)
{
if (!CHCNetSDK.NET_DVR_StopSaveRealData(m_RealHandle))
{
LastErr = CHCNetSDK.NET_DVR_GetLastError();
return false;
}
m_Record = false;
m_RealHandle = -1;
return true;
}
else
{
return false;
}
}
public void Dispose()
{
try
{
if (m_lUserID >= 0)
{
CHCNetSDK.NET_DVR_Logout_V30(m_lUserID);
m_lUserID = -1;
}
if (m_RealHandle >= 0)
{
CHCNetSDK.NET_DVR_StopRealPlay(m_RealHandle);
m_RealHandle = -1;
}
CHCNetSDK.NET_DVR_Cleanup();
}
catch
{ }
}
}
}
录制视频操作类录制视频操作类
using System;
using System.Runtime.InteropServices;
namespace VideoHelper
{
[ComImport, GuidAttribute("CB5BDC81-93C1-11CF-8F20-00805F2CD064")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IObjectSafety
{
[PreserveSig]
int GetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] ref int pdwSupportedOptions, [MarshalAs(UnmanagedType.U4)] ref int pdwEnabledOptions);
[PreserveSig()]
int SetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] int dwOptionSetMask, [MarshalAs(UnmanagedType.U4)] int dwEnabledOptions);
}
}
接口代码using System;
using System.Windows.Forms;
using System.IO;
using System.Runtime.InteropServices;
namespace VideoHelper
{
[System.Security.SecuritySafeCritical]
[Guid("79629620-3C0C-4D47-B93B-2D36AEF8EF31")]
public partial class VideoControl : UserControl,IObjectSafety
{
public VideoControl()
{
InitializeComponent();
}
string videopath = Environment.CurrentDirectory;
Videos video;
IntPtr handle;
private void btnLogin_Click(object sender, EventArgs e)
{
if (btnLogin.Text == "登录")
{
try
{
if (string.IsNullOrWhiteSpace(this.txtIP.Text))
{
MessageBox.Show("IP地址不能为空！");
return;
}
if (string.IsNullOrWhiteSpace(this.txtUserID.Text))
{
MessageBox.Show("用户名不能为空！");
return;
}
if (string.IsNullOrWhiteSpace(this.txtPwd.Text))
{
MessageBox.Show("密码不能为空！");
return;
}
video = new Videos();
if (video.Initialize(this.txtIP.Text, Convert.ToInt32(this.numericUpDown1.Value), this.txtUserID.Text, this.txtPwd.Text))
{
this.btnLogin.Text = "注销";
MessageBox.Show("登录成功！");
this.btnStart.Enabled = true;
this.btnSave.Enabled = true;
}
else
{
MessageBox.Show("登录失败！");
}
}
catch (Exception ee)
{
MessageBox.Show("登录异常：" + ee.Message);
}
}
else if (btnLogin.Text == "注销")
{
try
{
video.Dispose();
this.btnLogin.Text = "登录";
this.btnStart.Enabled = false;
this.btnSave.Enabled = false;
}
catch (Exception ee)
{
MessageBox.Show("注销异常：" + ee.Message);
}
}
}
private void btnStart_Click(object sender, EventArgs e)
{
try
{
string filename = txtFile.Text.Trim();
if (filename.IndexOfAny(Path.GetInvalidFileNameChars()) >= 0 || string.IsNullOrWhiteSpace(filename))
{
MessageBox.Show("文件名含有非法字符或空格，请重新输入");
txtFile.Focus();
return;
}
video.Start(handle, filename + comboBox1.SelectedItem.ToString());
this.btnStart.Enabled = false;
this.btnSave.Enabled = true;
}
catch (Exception ee)
{
MessageBox.Show("异常：" + ee.Message);
}
}
private void btnSave_Click(object sender, EventArgs e)
{
try
{
if (video.End())
{
MessageBox.Show("视频已保存！");
this.btnStart.Enabled = true;
this.btnSave.Enabled = false;
}
else
{
MessageBox.Show("保存失败！");
this.btnStart.Enabled = true;
this.btnSave.Enabled = true;
}
}
catch (Exception ee)
{ MessageBox.Show("异常：" + ee.Message); }
}
private void button1_Click(object sender, EventArgs e)
{
try
{
System.Diagnostics.Process.Start(videopath);
}
catch
{ }
}
private void VideoControl_Load(object sender, EventArgs e)
{
this.comboBox1.SelectedItem = ".mp4";
this.handle = pictureBox1.Handle;
this.btnStart.Enabled = false;
this.btnSave.Enabled = false;
}
#region IObjectSafety 成员
private const string _IID_IDispatch = "{00020400-0000-0000-C000-000000000046}";
private const string _IID_IDispatchEx = "{a6ef9860-c720-11d0-9337-00a0c90dcaa9}";
private const string _IID_IPersistStorage = "{0000010A-0000-0000-C000-000000000046}";
private const string _IID_IPersistStream = "{00000109-0000-0000-C000-000000000046}";
private const string _IID_IPersistPropertyBag = "{37D84F60-42CB-11CE-8135-00AA004BB851}";
private const int INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001;
private const int INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002;
private const int S_OK = 0;
private const int E_FAIL = unchecked((int)0x80004005);
private const int E_NOINTERFACE = unchecked((int)0x80004002);
private bool _fSafeForScripting = true;
private bool _fSafeForInitializing = true;
public int GetInterfaceSafetyOptions(ref Guid riid, ref int pdwSupportedOptions, ref int pdwEnabledOptions)
{
int Rslt = E_FAIL;
string strGUID = riid.ToString("B");
pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
Rslt = S_OK;
pdwEnabledOptions = 0;
if (_fSafeForScripting == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
Rslt = S_OK;
pdwEnabledOptions = 0;
if (_fSafeForInitializing == true)
pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA;
break;
default:
Rslt = E_NOINTERFACE;
break;
}
return Rslt;
}
public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
{
int Rslt = E_FAIL;
string strGUID = riid.ToString("B");
switch (strGUID)
{
case _IID_IDispatch:
case _IID_IDispatchEx:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_CALLER) && (_fSafeForScripting == true))
Rslt = S_OK;
break;
case _IID_IPersistStorage:
case _IID_IPersistStream:
case _IID_IPersistPropertyBag:
if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_DATA) && (_fSafeForInitializing == true))
Rslt = S_OK;
break;
default:
Rslt = E_NOINTERFACE;
break;
}
return Rslt;
}
#endregion
}
}
控件代码namespace VideoHelper
{
partial class VideoControl
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region 组件设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.label4 = new System.Windows.Forms.Label();
this.txtFile = new System.Windows.Forms.TextBox();
this.btnSave = new System.Windows.Forms.Button();
this.btnStart = new System.Windows.Forms.Button();
this.btnLogin = new System.Windows.Forms.Button();
this.label3 = new System.Windows.Forms.Label();
this.txtPwd = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.txtUserID = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.numericUpDown1 = new System.Windows.Forms.NumericUpDown();
this.IP = new System.Windows.Forms.Label();
this.txtIP = new System.Windows.Forms.TextBox();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// button1
//
this.button1.Cursor = System.Windows.Forms.Cursors.Hand;
this.button1.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.button1.Location = new System.Drawing.Point(377, 360);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(138, 22);
this.button1.TabIndex = 58;
this.button1.Text = "打开视频存放位置";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// comboBox1
//
this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.comboBox1.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.comboBox1.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.comboBox1.FormattingEnabled = true;
this.comboBox1.Items.AddRange(new object[] {
".mp4",
".avi",
".wmv",
".3gp",
".flv"});
this.comboBox1.Location = new System.Drawing.Point(303, 361);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(55, 25);
this.comboBox1.TabIndex = 57;
//
// label4
//
this.label4.AutoSize = true;
this.label4.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label4.Location = new System.Drawing.Point(14, 360);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(116, 17);
this.label4.TabIndex = 56;
this.label4.Text = "请输入视频文件名：";
//
// txtFile
//
this.txtFile.Location = new System.Drawing.Point(136, 360);
this.txtFile.Name = "txtFile";
this.txtFile.Size = new System.Drawing.Size(161, 21);
this.txtFile.TabIndex = 55;
//
// btnSave
//
this.btnSave.Cursor = System.Windows.Forms.Cursors.Hand;
this.btnSave.Font = new System.Drawing.Font("微软雅黑", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.btnSave.Location = new System.Drawing.Point(490, 298);
this.btnSave.Name = "btnSave";
this.btnSave.Size = new System.Drawing.Size(57, 45);
this.btnSave.TabIndex = 54;
this.btnSave.Text = "保存";
this.btnSave.UseVisualStyleBackColor = true;
this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
//
// btnStart
//
this.btnStart.Cursor = System.Windows.Forms.Cursors.Hand;
this.btnStart.Font = new System.Drawing.Font("微软雅黑", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.btnStart.Location = new System.Drawing.Point(421, 298);
this.btnStart.Name = "btnStart";
this.btnStart.Size = new System.Drawing.Size(57, 45);
this.btnStart.TabIndex = 53;
this.btnStart.Text = "录制";
this.btnStart.UseVisualStyleBackColor = true;
this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
//
// btnLogin
//
this.btnLogin.Cursor = System.Windows.Forms.Cursors.Hand;
this.btnLogin.Font = new System.Drawing.Font("微软雅黑", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.btnLogin.Location = new System.Drawing.Point(352, 298);
this.btnLogin.Name = "btnLogin";
this.btnLogin.Size = new System.Drawing.Size(57, 45);
this.btnLogin.TabIndex = 52;
this.btnLogin.Text = "登录";
this.btnLogin.UseVisualStyleBackColor = true;
this.btnLogin.Click += new System.EventHandler(this.btnLogin_Click);
//
// label3
//
this.label3.AutoSize = true;
this.label3.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label3.Location = new System.Drawing.Point(172, 325);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(44, 17);
this.label3.TabIndex = 51;
this.label3.Text = "密码：";
//
// txtPwd
//
this.txtPwd.Location = new System.Drawing.Point(221, 322);
this.txtPwd.Name = "txtPwd";
this.txtPwd.PasswordChar = '*';
this.txtPwd.Size = new System.Drawing.Size(115, 21);
this.txtPwd.TabIndex = 50;
this.txtPwd.Text = "8910jqk#";
this.txtPwd.UseSystemPasswordChar = true;
//
// label2
//
this.label2.AutoSize = true;
this.label2.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label2.Location = new System.Drawing.Point(8, 322);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(44, 17);
this.label2.TabIndex = 49;
this.label2.Text = "用户名";
//
// txtUserID
//
this.txtUserID.Location = new System.Drawing.Point(66, 322);
this.txtUserID.Name = "txtUserID";
this.txtUserID.Size = new System.Drawing.Size(100, 21);
this.txtUserID.TabIndex = 48;
this.txtUserID.Text = "admin";
//
// label1
//
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label1.Location = new System.Drawing.Point(172, 295);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(44, 17);
this.label1.TabIndex = 47;
this.label1.Text = "端口：";
//
// numericUpDown1
//
this.numericUpDown1.Location = new System.Drawing.Point(222, 295);
this.numericUpDown1.Maximum = new decimal(new int[] {
65535,
0,
0,
0});
this.numericUpDown1.Minimum = new decimal(new int[] {
1,
0,
0,
0});
this.numericUpDown1.Name = "numericUpDown1";
this.numericUpDown1.Size = new System.Drawing.Size(114, 21);
this.numericUpDown1.TabIndex = 46;
this.numericUpDown1.Value = new decimal(new int[] {
8000,
0,
0,
0});
//
// IP
//
this.IP.AutoSize = true;
this.IP.Font = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.IP.Location = new System.Drawing.Point(20, 295);
this.IP.Name = "IP";
this.IP.Size = new System.Drawing.Size(19, 17);
this.IP.TabIndex = 45;
this.IP.Text = "IP";
//
// txtIP
//
this.txtIP.Location = new System.Drawing.Point(66, 295);
this.txtIP.Name = "txtIP";
this.txtIP.Size = new System.Drawing.Size(100, 21);
this.txtIP.TabIndex = 44;
this.txtIP.Text = "192.168.1.64";
//
// pictureBox1
//
this.pictureBox1.Location = new System.Drawing.Point(5, 5);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(542, 269);
this.pictureBox1.TabIndex = 43;
this.pictureBox1.TabStop = false;
//
// VideoControl
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.Controls.Add(this.button1);
this.Controls.Add(this.comboBox1);
this.Controls.Add(this.label4);
this.Controls.Add(this.txtFile);
this.Controls.Add(this.btnSave);
this.Controls.Add(this.btnStart);
this.Controls.Add(this.btnLogin);
this.Controls.Add(this.label3);
this.Controls.Add(this.txtPwd);
this.Controls.Add(this.label2);
this.Controls.Add(this.txtUserID);
this.Controls.Add(this.label1);
this.Controls.Add(this.numericUpDown1);
this.Controls.Add(this.IP);
this.Controls.Add(this.txtIP);
this.Controls.Add(this.pictureBox1);
this.Name = "VideoControl";
this.Size = new System.Drawing.Size(556, 398);
this.Load += new System.EventHandler(this.VideoControl_Load);
((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button button1;
private System.Windows.Forms.ComboBox comboBox1;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox txtFile;
private System.Windows.Forms.Button btnSave;
private System.Windows.Forms.Button btnStart;
private System.Windows.Forms.Button btnLogin;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox txtPwd;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox txtUserID;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.NumericUpDown numericUpDown1;
private System.Windows.Forms.Label IP;
private System.Windows.Forms.TextBox txtIP;
private System.Windows.Forms.PictureBox pictureBox1;
}
}
控件设计器代码控件设计器代码
至此，此项目结束。
右键点击解决方案，添加新项目，如下，至于为什么建立两个项目，我一会儿在下面解释，
在HkHelper项目中添加类CHCNetSDK.cs，此类是海康提供的，可以在官网找到
接下来，最重要的，项目属性设置如下，两个项目都要设置：
至此，自定义控件已经完成，接下来就是打包，新建一个安装项目：
右键点击安装项目，“添加”->“项目输出”，并选择自定义控件的项目，然后确定
然后添加海康提供的SDK的库文件文件夹下的所有文件和文件夹到项目中，如下：
然后生成项目，会生成setup.exe和SetupVideo.msi两个文件，然后用打包文件，把这两个文件打包称cab文件就OK了
打包文件一共三个cabarc.exe、build.bat、install.inf
build.bat文件：
"cabarc.exe" n VideoSetup.cab SetupVideo.msi install.inf
install.inf文件：
[version] signature="$CHICAGO$"AdvancedINF=2.0[Setup Hooks] hook1=hook1 [hook1] run=msiexec.exe /i "%EXTRACT_DIR%\SetupVideo.msi" /qn
cabarc.exe是微软提供的工具
最后说一下为什么要分为两个项目去实现控件，那是因为如果在一个项目中的话，调用海康动态库的类CHCNetSDK.cs不能进行COM注册
The above is the detailed content of How to solve the problem of calling Hikvision SDK when making ActiveX controls in C#. For more information, please follow other related articles on the PHP Chinese website!
Developing with C# .NET: A Practical Guide and ExamplesMay 12, 2025 am 12:16 AMC# and .NET provide powerful features and an efficient development environment. 1) C# is a modern, object-oriented programming language that combines the power of C and the simplicity of Java. 2) The .NET framework is a platform for building and running applications, supporting multiple programming languages. 3) Classes and objects in C# are the core of object-oriented programming. Classes define data and behaviors, and objects are instances of classes. 4) The garbage collection mechanism of .NET automatically manages memory to simplify the work of developers. 5) C# and .NET provide powerful file operation functions, supporting synchronous and asynchronous programming. 6) Common errors can be solved through debugger, logging and exception handling. 7) Performance optimization and best practices include using StringBuild
C# .NET: Understanding the Microsoft .NET FrameworkMay 11, 2025 am 12:17 AM.NETFramework is a cross-language, cross-platform development platform that provides a consistent programming model and a powerful runtime environment. 1) It consists of CLR and FCL, which manages memory and threads, and FCL provides pre-built functions. 2) Examples of usage include reading files and LINQ queries. 3) Common errors involve unhandled exceptions and memory leaks, and need to be resolved using debugging tools. 4) Performance optimization can be achieved through asynchronous programming and caching, and maintaining code readability and maintainability is the key.
The Longevity of C# .NET: Reasons for its Enduring PopularityMay 10, 2025 am 12:12 AMReasons for C#.NET to remain lasting attractive include its excellent performance, rich ecosystem, strong community support and cross-platform development capabilities. 1) Excellent performance and is suitable for enterprise-level application and game development; 2) The .NET framework provides a wide range of class libraries and tools to support a variety of development fields; 3) It has an active developer community and rich learning resources; 4) .NETCore realizes cross-platform development and expands application scenarios.
Mastering C# .NET Design Patterns: From Singleton to Dependency InjectionMay 09, 2025 am 12:15 AMDesign patterns in C#.NET include Singleton patterns and dependency injection. 1.Singleton mode ensures that there is only one instance of the class, which is suitable for scenarios where global access points are required, but attention should be paid to thread safety and abuse issues. 2. Dependency injection improves code flexibility and testability by injecting dependencies. It is often used for constructor injection, but it is necessary to avoid excessive use to increase complexity.
C# .NET in the Modern World: Applications and IndustriesMay 08, 2025 am 12:08 AMC#.NET is widely used in the modern world in the fields of game development, financial services, the Internet of Things and cloud computing. 1) In game development, use C# to program through the Unity engine. 2) In the field of financial services, C#.NET is used to develop high-performance trading systems and data analysis tools. 3) In terms of IoT and cloud computing, C#.NET provides support through Azure services to develop device control logic and data processing.
C# .NET Framework vs. .NET Core/5/6: What's the Difference?May 07, 2025 am 12:06 AM.NETFrameworkisWindows-centric,while.NETCore/5/6supportscross-platformdevelopment.1).NETFramework,since2002,isidealforWindowsapplicationsbutlimitedincross-platformcapabilities.2).NETCore,from2016,anditsevolutions(.NET5/6)offerbetterperformance,cross-
The Community of C# .NET Developers: Resources and SupportMay 06, 2025 am 12:11 AMThe C#.NET developer community provides rich resources and support, including: 1. Microsoft's official documents, 2. Community forums such as StackOverflow and Reddit, and 3. Open source projects on GitHub. These resources help developers improve their programming skills from basic learning to advanced applications.
The C# .NET Advantage: Features, Benefits, and Use CasesMay 05, 2025 am 12:01 AMThe advantages of C#.NET include: 1) Language features, such as asynchronous programming simplifies development; 2) Performance and reliability, improving efficiency through JIT compilation and garbage collection mechanisms; 3) Cross-platform support, .NETCore expands application scenarios; 4) A wide range of practical applications, with outstanding performance from the Web to desktop and game development.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
Zend Studio 13.0.1
Powerful PHP integrated development environment
SublimeText3 Chinese version
Chinese version, very easy to use
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
