How do I add values in two text boxes and the operator is also in text box text

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Hi
i want to add or subtract or multiply values in two text box text but the operator is also in textbox text . I have shifting from VB.net to C#.

Error CS0019 Operator '&' cannot be applied to operands of type 'string' and 'string'

What I have tried:

TbResult.Text = TbResult.Text & TbOperator.Text & TbInput.Text;

Posted 8-Mar-20 8:13am

pravin9455

Updated 8-Mar-20 8:30am

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Richard MacCutchan · Accepted Answer · 2020-03-08T08:30:00

That is VB string concatenation, so nothing to do with your question, or C#. You should capture the numbers into variables using the relevant xxx.TryParse method (where xxx is Int or Double as required). You can then use a switch block to perform the appropriate mathematical function and pass the result to the final text box.