Dynamic code in textbox ??

Hi Bheeshm,

Thank you sooooo much for your solution and interest on my problem. I wrote all the codes behind my Button and it worked well. Thank you again. You are the one who utnderstood what I wanted to do. But I need your advises one more time.

I wrote string sCSCode = codeBox.Text;

at the begining of the codes then I ran the program and I wrote these in the codeBox :

Convert.ToDouble(value1.Text)+Convert.ToDouble(value2.Text);

( I have two other textBoxes to write some numbers.. )

I take this Error :  ERROR: The name 'value1' does not exist in the curent context.

Hello Abdussamed,

I have got some help from the following article
http://www.codeproject.com/Articles/11939/Evaluate-C-Code-Eval-Function

and here is the Same Code that i have modified a bit for you.

  private void button1_Click(object sender, EventArgs e)
        {
            string sCSCode = @"Convert.ToDouble(10)+ Convert.ToDouble(20);";
            CSharpCodeProvider c = new CSharpCodeProvider();
            ICodeCompiler icc = c.CreateCompiler();
            CompilerParameters cp = new CompilerParameters();

            cp.ReferencedAssemblies.Add("system.dll");
            cp.ReferencedAssemblies.Add("system.xml.dll");
            cp.ReferencedAssemblies.Add("system.data.dll");
            cp.ReferencedAssemblies.Add("system.windows.forms.dll");
            cp.ReferencedAssemblies.Add("system.drawing.dll");

            cp.CompilerOptions = "/t:library";
            cp.GenerateInMemory = true;

            StringBuilder sb = new StringBuilder("");
            sb.Append("using System;\n");
            sb.Append("using System.Xml;\n");
            sb.Append("using System.Data;\n");
            sb.Append("using System.Data.SqlClient;\n");
            sb.Append("using System.Windows.Forms;\n");
            sb.Append("using System.Drawing;\n");

            sb.Append("namespace CSCodeEvaler{ \n");
            sb.Append("public class CSCodeEvaler{ \n");
            sb.Append("public object EvalCode(){\n");
            sb.Append("return " + sCSCode + "; \n");
            sb.Append("} \n");
            sb.Append("} \n");
            sb.Append("}\n");

            CompilerResults cr = icc.CompileAssemblyFromSource(cp, sb.ToString());
            if (cr.Errors.Count > 0)
            {
                MessageBox.Show("ERROR: " + cr.Errors[0].ErrorText,
                   "Error evaluating cs code", MessageBoxButtons.OK,
                   MessageBoxIcon.Error);
            }

            System.Reflection.Assembly a = cr.CompiledAssembly;
            object o = a.CreateInstance("CSCodeEvaler.CSCodeEvaler");

            Type t = o.GetType();
            MethodInfo mi = t.GetMethod("EvalCode");

            object s = mi.Invoke(o, null); // See Your Result Here
        }

Hi Abdussamed Please have a look at the links below.

 http://support.microsoft.com/kb/304655
 

http://stackoverflow.com/questions/826398/is-it-possible-to-dynamically-compile-and-execute-c-sharp-code-fragments