Concatenate strings using String.Concat function in C#

Title: Using the String.Concat function in C# to concatenate strings

In C# programming, strings are a common data type, and we often need to String concatenation operation. C# provides a variety of ways to concatenate strings, one of the commonly used methods is to use the String.Concat function. This article will introduce how to use the String.Concat function and provide specific code examples.

String.Concat function is a static method used to concatenate multiple strings. Its signature is as follows:

public static string Concat(params string[] values);

This method accepts a variable parameter and can pass in multiple strings. It concatenates all the strings passed in and returns a new string.

The following is an example code that uses the String.Concat function to connect strings:

using System;

class Program
{
    static void Main()
    {
        string str1 = "Hello";
        string str2 = "World";
        string str3 = "!";
        
        string result = String.Concat(str1, str2, str3);
        
        Console.WriteLine(result);
    }
}

In the above code, we declared three string variables str1, str2 and str3, and assigned values ​​​​to " Hello", "World" and "!". Then use the String.Concat function to concatenate these three strings to get a new string result. Finally, we use the Console.WriteLine function to print the result to the console.

Run the above code, the output result is: "HelloWorld!". It can be seen that the String.Concat function successfully concatenates three strings together.

In addition to passing in multiple string parameters, the String.Concat function also supports passing in a string array as a parameter. The following is a sample code that uses a string array to connect strings:

using System;

class Program
{
    static void Main()
    {
        string[] strings = new string[] {"Hello", "World", "!"};
        
        string result = String.Concat(strings);
        
        Console.WriteLine(result);
    }
}

In the above code, we created a string array strings and assigned the three strings "Hello" and "World" to the array. and"!". Then use the string array as a parameter of the String.Concat function, and also use the Console.WriteLine function to print the result.

Through the above sample code, we can see that it is very simple to use the String.Concat function to connect strings. Whether multiple string parameters or a string array are passed in, the string concatenation operation can be successfully completed. This allows us to handle strings more flexibly in C# programming.

To summarize, it is very convenient to use the String.Concat function in C# to connect strings. Whether multiple string parameters or a string array are passed in, string concatenation operations can be easily implemented. In the actual programming process, we can choose the appropriate method to perform string concatenation as needed to meet different needs.

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