CompilerError Class

Definition

Namespace:

System.CodeDom.Compiler

Assembly:

System.CodeDom.dll

Source:

CompilerError.cs

Represents a compiler error or warning.

C#

public class CompilerError

Inheritance

Object

CompilerError

Derived

System.Workflow.ComponentModel.Compiler.WorkflowCompilerError

Examples

The following example compiles a CodeDOM program graph and provides an example of how to programmatically access CompilerError data.

C#

using System;
using System.CodeDom;
using System.CodeDom.Compiler;
using Microsoft.CSharp;

namespace CompilerError_Example
{
    public class Class1
    {		
        [STAThread]
        static void Main(string[] args)			
        {
            // Output some program information using Console.WriteLine.
            Console.WriteLine("This program compiles a CodeDOM program that incorrectly declares multiple data");
            Console.WriteLine("types to demonstrate handling compiler errors programmatically.");
            Console.WriteLine("");

            // Compile the CodeCompileUnit retrieved from the GetCompileUnit() method.
            CSharpCodeProvider provider = new Microsoft.CSharp.CSharpCodeProvider();

            // Initialize a CompilerParameters with the options for compilation.
            string[] assemblies = new String[] {"System.dll"};
            CompilerParameters options = new CompilerParameters( assemblies, "output.exe");

            // Compile the CodeDOM graph and store the results in a CompilerResults.
            CompilerResults results = provider.CompileAssemblyFromDom(options, GetCompileUnit());

            // Compilation produces errors. Print out each error.
            Console.WriteLine("Listing errors from compilation: ");
            Console.WriteLine("");
                for( int i=0; i<results.Errors.Count; i++)
                Console.WriteLine(results.Errors[i].ToString());			
        }

        public static CodeCompileUnit GetCompileUnit()
        {
            // Create a compile unit to contain a CodeDOM graph.
            CodeCompileUnit cu = new CodeCompileUnit();

            // Create a namespace named TestSpace.
            CodeNamespace cn = new CodeNamespace("TestSpace");		

            // Declare a new type named TestClass.	
            CodeTypeDeclaration cd = new CodeTypeDeclaration("TestClass");

            // Declare a new member string field named TestField.
            CodeMemberField cmf = new CodeMemberField("System.String", "TestField");

            // Add the field to the type.
            cd.Members.Add(cmf);

            // Declare a new member method named TestMethod.
            CodeMemberMethod cm = new CodeMemberMethod();
            cm.Name = "TestMethod";

            // Declare a string variable named TestVariable.
            CodeVariableDeclarationStatement cvd = new CodeVariableDeclarationStatement("System.String1", "TestVariable");
            cm.Statements.Add(cvd);

            // Cast the TestField reference expression to string and assign it to the TestVariable.
            CodeAssignStatement ca = new CodeAssignStatement(new CodeVariableReferenceExpression("TestVariable"),
                new CodeCastExpression("System.String2", new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), "TestField")));

            // This code can be used to generate the following code in C#:
            //            TestVariable = ((string)(this.TestField));

            cm.Statements.Add(ca);

            // Add the TestMethod member to the TestClass type.
            cd.Members.Add(cm);

            // Add the TestClass type to the namespace.
            cn.Types.Add(cd);

            // Add the TestSpace namespace to the compile unit.
            cu.Namespaces.Add(cn);
            return cu;
        }
    }
}

Remarks

CompilerError represents a compiler error or a warning that has been returned by the compiler.

Note

This class contains an inheritance demand at the class level that applies to all members. A SecurityException is thrown when the derived class does not have full-trust permission. For details about inheritance demands, see Inheritance Demands.

Constructors

CompilerError()	Initializes a new instance of the CompilerError class.
CompilerError(String, Int32, Int32, String, String)	Initializes a new instance of the CompilerError class using the specified file name, line, column, error number, and error text.

Properties

Column	Gets or sets the column number where the source of the error occurs.
ErrorNumber	Gets or sets the error number.
ErrorText	Gets or sets the text of the error message.
FileName	Gets or sets the file name of the source file that contains the code which caused the error.
IsWarning	Gets or sets a value that indicates whether the error is a warning.
Line	Gets or sets the line number where the source of the error occurs.

Methods

ToString()

Provides an implementation of Object's ToString() method.

Applies to

See also

• CompilerErrorCollection