How to check the textbox empty using standared function

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ASP.NET

Posted 6-Mar-13 19:04pm

Bhushan619

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Jameel VM 7-Mar-13 1:08am

standard fuction means? through client side or server side?

4 solutions

Solution 1

If you are looking for Server side function then you can use this to solve you problem.

string.IsNullOrEmpty();

Happy Coding :)

Posted 6-Mar-13 19:30pm

dpalash

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Ajinkya Ban · Accepted Answer · 2013-03-06T19:55:00

Solution 2

you can also use the following code

C#

if (textBox1.Text ==  DBNull.Value.ToString())
            {
                your message
            }

Posted 6-Mar-13 19:55pm

Ajinkya Ban

vishal.shimpi · Accepted Answer · 2013-03-06T21:23:00

Solution 3

by using jQuery you can do like this....

$("#btnSubmit").Click(function(){
   var textboxstring = $("#textboxId").text;
   if(textboxstring == "")
   {
      alert("text box in empty");
   }
});

Posted 6-Mar-13 21:23pm

vishal.shimpi

Syed Ali Raza · Accepted Answer · 2013-03-07T03:44:00

Solution 4

You can check through Server Side like this :

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

}

or use the Javascript function to validate the textbox

Posted 7-Mar-13 3:44am

Syed Ali Raza