C# Return Value if contain value from multiple textboxes winform

It's hard to understand from your description but I believe your asking how to check if a textbox has a value or not?

If this is not your question please update your question so we can better understand.

if(!string.IsNullOrEmpty(textbox1.Text))

{

  // do something with textbox1.Text

}

Hi Luv,

Your question is not clear, can you explain a bit more?

Thank you.