VBscript C#

[k005]

        public double CalculFormula(string Formula)
        {

            MSScriptControl.ScriptControl sc = new MSScriptControl.ScriptControl();
            sc.Language = "VBScript";

            try
            {
                return System.Convert.ToDouble(sc.Eval(Formula));
            }
            catch (System.Exception)

            {
                return 0;
            }

        }

private void button5_Click(object sender, EventArgs e)
{
lblsonuc.Text = CalculFormula(txtCalc.Text).ToString();
}

Hello

This code works fine when compiled as WindowsForm. When I compile it as a plug-in (.dll), it does not find any errors.

but when triggered with the button I get this error.

[norman.yuan · Accepted solution]

As you have already known, as I replied in the other discussion forum, that Microsoft ScriptControl 1.0 is a 32-bit COM component. It being working in your .NET WinForm EXE is because your EXE is built against "any CPU" so that the .NET runtime automatically runs it as 32-bit app due to the fact the app uses a 32-bit component. If you rebuild your WinForm by targeting x64 CPU, you would have known it does not work.

Since you post this in AutoCAD .NET discussion forum, I assume you are trying to run the code in AutoCAD plugin, where your AutoCAD is 64-bit. If so, you CANNOT use this 32-bit ScriptControl. 

You may want to search for different scripting component that is pure .NET component (thus run on both x86 or x64 platforms).

[k005]

@norman.yuan 

Thank you. 😔