BUG: Error message gives wrong information

Comments

• ipong

  October 2016 edited 10:42AM

  I learn something new from your question, "scripting".
  If there is an error in the script, compiler generates error "..... is not part of the current context."
  

  using System.CodeDom.Compiler;
  using System.Reflection;
  
  
          private void button1_Click(object sender, EventArgs e)
          {
              Assembly myCode = CompileCode();
              if (myCode != null)
              {
                  MethodInfo mi = myCode.GetExportedTypes().FirstOrDefault().GetMethod("AnotherMethod");
                  try
                  {
                      object result = mi.Invoke(new object(), null);
                      MessageBox.Show(result.ToString(), "Dynamic Method", MessageBoxButtons.OK);
                  }
                  catch (Exception ex)
                  {
                      MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK);
                  }                
              }
          }
  
  
          private Assembly CompileCode()
          {
              using (CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp"))
              {
                  CompilerParameters parameters = new CompilerParameters();
                  CompilerResults results = provider.CompileAssemblyFromSource(parameters, textBox1.Text);
                  if (results.Errors.HasErrors)
                  {
                      foreach (CompilerError err in results.Errors)
                      {
                          MessageBox.Show(err.ErrorText, "Compiler Error", MessageBoxButtons.OK);
                      }
                      return null;
                  }
                  return results.CompiledAssembly;               
              }     
          }
  

  
  
  and textBox1.Text contains :
  

  public class DynamicClass
  {
      public static string DynamicMethod()
      {
          return "Hello World";
      }
  
      public static string AnotherMethod()
      {
          return "Another World";
      }
  }
  
• Outsourcing ICT

  November 2016 edited 10:42AM

  Thanks for this post. This is very helpful. For more information you can visit outsourcing ict.