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CSharpCodeProvider Constructor (IDictionary<String, String>)

Initializes a new instance of the CSharpCodeProvider class by using the specified provider options.

Namespace:  Microsoft.CSharp
Assembly:  System (in System.dll)

public CSharpCodeProvider(
	IDictionary<string, string> providerOptions


Type: System.Collections.Generic.IDictionary<String, String>

A IDictionary<TKey, TValue> object that contains the provider options from the configuration file.


providerOptions is null.

The value for providerOptions is obtained from the <providerOption> element in the configuration file. You can identify the version of the CSharpCodeProvider you want to use by specifying the <providerOption> element, supplying "CompilerVersion" as the option name, and supplying the version number (for example, "v3.5") as the option value. You must precede the version number with a lower case "v".

The following configuration file example demonstrates how to specify that version 3.5 of the C# code provider should be used.

      <!-- zero or more compiler elements -->
        type="Microsoft.CSharp.CSharpCodeProvider, System, 
          Version=2.0.3600.0, Culture=neutral, 
        warningLevel="1" >
            value="v3.5" />

The following example shows how to specify the compiler version when you create a new instance of the CSharpCodeProvider class.

using System;
using System.CodeDom.Compiler;
using Microsoft.CSharp;
using Microsoft.VisualBasic;
using System.Collections.Generic;

namespace ProviderOptions
    class Program
        static void Main(string[] args)
            Console.WriteLine("Press Enter key to exit.");
        static void DisplayCSharpCompilerInfo()
            Dictionary<string, string> provOptions =
            new Dictionary<string, string>();

            provOptions.Add("CompilerVersion", "v3.5");
            // Get the provider for Microsoft.CSharp
            CSharpCodeProvider csProvider = new CSharpCodeProvider(provOptions);

            // Display the C# language provider information.
            Console.WriteLine("CSharp provider is {0}",
            Console.WriteLine("  Provider hash code:     {0}",
            Console.WriteLine("  Default file extension: {0}",



.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

  • LinkDemand 

    for full trust for the immediate caller. This member cannot be used by partially trusted code.

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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