本文实例讲述了C#使用Ado.Net更新和添加数据到Excel表格的方法。分享给大家供大家参考。具体分析如下:
微软NET提供了一个交互的方法,通过使用ADO.NET与Microsoft Office程序。内置的OLEDB提供可以用来操纵Excel的。xls电子表格。您可以在Excel中创建一个命名的范围确定表名,我们还需要列标题,如果电子表格中不包含列标题,那么你就需要将它们添加。
如何在Excel中创建一个命名的范围?
随着电子表格打开,选择你希望包括数据查询,包括标题。
选择“插入”菜单,然后命名并选择“定义”。
输入表的名称,然后单击“添加”。
关闭对话框并保存工作簿。
下面的例子演示了如何更新记录和插入数据,通过OLEDB使用常规的SQL命令和执行命令。
using System; using System.Data.OleDb; namespace ConsoleApplication1 { class Program { static void Main() { string connectionString = "Provider=Microsoft.Jet.OleDb.4.0; data source=c:\\offices.xls; Extended Properties=Excel 8.0;"; string selectString = "INSERT INTO Office VALUES('12345′, 'Acme Inc', 'Acme Way, CA', 'Testy McTest', '01234-987654′)"; //Office is the named range. OleDbConnection con = new OleDbConnection(connectionString); OleDbCommand cmd = new OleDbCommand(selectString, con); try { con.Open(); cmd.ExecuteNonQuery(); } catch (Exception ex) { Console.WriteLine(ex.Message); } finally { con.Dispose(); } } } }
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C# and .NET adapt to the needs of emerging technologies through continuous updates and optimizations. 1) C# 9.0 and .NET5 introduce record type and performance optimization. 2) .NETCore enhances cloud native and containerized support. 3) ASP.NETCore integrates with modern web technologies. 4) ML.NET supports machine learning and artificial intelligence. 5) Asynchronous programming and best practices improve performance.

C#.NETissuitableforenterprise-levelapplicationswithintheMicrosoftecosystemduetoitsstrongtyping,richlibraries,androbustperformance.However,itmaynotbeidealforcross-platformdevelopmentorwhenrawspeediscritical,wherelanguageslikeRustorGomightbepreferable.

The programming process of C# in .NET includes the following steps: 1) writing C# code, 2) compiling into an intermediate language (IL), and 3) executing by the .NET runtime (CLR). The advantages of C# in .NET are its modern syntax, powerful type system and tight integration with the .NET framework, suitable for various development scenarios from desktop applications to web services.

C# is a modern, object-oriented programming language developed by Microsoft and as part of the .NET framework. 1.C# supports object-oriented programming (OOP), including encapsulation, inheritance and polymorphism. 2. Asynchronous programming in C# is implemented through async and await keywords to improve application responsiveness. 3. Use LINQ to process data collections concisely. 4. Common errors include null reference exceptions and index out-of-range exceptions. Debugging skills include using a debugger and exception handling. 5. Performance optimization includes using StringBuilder and avoiding unnecessary packing and unboxing.

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