MissingMethodException in C# Program

Question

I wrote a Windows Form Application in C# and it works well for my computer. But on another PC, an error occurs when I try to do some stuff.

MenuItem_Click Event Handler

private void rUNToolStripMenuItem_Click(object sender, EventArgs e)
{
    MessageBox.Show("I'm in rUNToolStripMenuItem_Click!");
    ...

}

ToolStripMenuItem Event Handler

private void dataPositionToolStripMenuItem_Click(object sender, EventArgs e)
{
    MessageBox.Show("I'm in dataPositionToolStripMenuItem_Click!");
    ...    
}

Running on my computer:

MenuItem_ClickEvent Handler Output (On My PC)

MessageBox appears: "I'm in rUNToolStripMenuItem_Click"

ToolStripMenuItem Event Handler (On My PC)

MessageBox appears: "I'm in dataPositionToolStripMenuItem_Click!"

MenuItem_Click Event Handler: (On another PC)

Messagebox doesn't appear and an Exception is thrown

Method not found: "Void    
Microsoft.CSharp.RuntimeBinder.CSharpGetMemberBinder.ctor(
System.String.System.Type, System.Collections.Generic.IEnumerable'1<Microsoft 
.CSharp.RuntimeBinder.CSharpArgument Info>)'.

This is the PrintScreen with error:

What am I doing wrong?

Answer 1

does the other computer have the correct version of the .net runtime installed on it for which you built that application too?

Answer 2

When developing applications in .NET you need to ensure the host environment has the same version of the .NET framework that your application is targeting.

If you right click on your application from the solution explorer, go to properties then select the Application tab you can specify (or confirm) what framework your application is using, this will be the version you will have to install.

If you have a setup project you can make the .NET framework a pre-requisite (basically makes the user install that before they can install the application) so you don't have issues like this...