How to use &&(operator) on operands of type bool or int in ASP.NET

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I want to use &&(and) operator in the "if condition" in my code of ASP.NET.
My both operands on which i am applying && operator are int and int? respectively.
But it is showing error that, you can not apply && operator on int . How i can solve that error because i want to use && operator. Please help me.

What I have tried:

if(temp<=6){
if (check==1 && h=Convert.ToInt32(TextBox1.Text))
{
Label1.Text = "Sorry That group has corss its limits";

}

Posted 16-Mar-17 7:43am

Hassaan_Malik

Updated 16-Mar-17 7:48am

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AnvilRanger · Accepted Answer · 2017-03-16T07:47:00

Solution 1

You are not applying the operands on an int, you apply them only on bools.

If you look close at your second operand you can see the issue clearly. You are assigning the value of Convert.ToInt32 to whatever h is.

Posted 16-Mar-17 7:47am

AnvilRanger

Comments

Richard Deeming 16-Mar-17 13:49pm

Snap! :)

Hassaan_Malik 16-Mar-17 13:50pm

Sorry i didn't get you point. By the way h is "int?"(null-able int). Would you like to slightly explain that?

Richard Deeming · Accepted Answer · 2017-03-16T07:48:00

That's a slightly misleading error message. The real problem is that you're missing an = in your second condition:

C#

h == Convert.ToInt32(TextBox1.Text)

With only a single =, you're setting the value of h to the value from TextBox1, rather than comparing it.

NB: You should probably use Int32.TryParse[^] instead of Convert.ToInt32, to avoid getting an exception if the user enters something that can't be converted to an integer.