validation

[rakeshs312]

Hai all, I have a multiline text box. I want to limit the charaters inside the textbox to 250. For that i written this code in cs file i added the attributes like(txtEmpWithA is my textbox name)

this.txtEmpWithA.Attributes.Add("OnKeyPress", "txtreason_limit(event)");

and the function in aspx file

function txtreason_limit(evt)
{

if(document.form1.txtEmpWithA .value.length == 250)
             { 
             evt.keyCode = 0;
             return;
             }
         }

This is working fine when i am typing there ,but if i copy and paste,it taking more than 250 charactors

Please help

[padmanabhan N]

this can be handled by 2 ways 1) by writing the code for validating whether the text is greater than the length if (TextBox1.Text.Length > 250) { Response.Write("The text is greater than 250"); } (or) 2) disable copy and paste. function DisableCopyPaste() //Prevents Copy, Paste, Select, ContextMenu in TextBox and MultiLine TextBox controls. { var myForm = document.forms[0]; for (var i = 0; i < myForm.elements.length; i++) { var elementType = myForm.elements[i].type; if (elementType == 'text' || elementType == 'textarea') { document.getElementById(myForm.elements[i].id).onpaste = function(){return false;}; document.getElementById(myForm.elements[i].id).oncontextmenu = function(){return false;}; document.getElementById(myForm.elements[i].id).onselectstart = function(){return false;}; document.getElementById(myForm.elements[i].id).ondragstart = function(){return false;}; } } } //paste this in page load ClientScript.RegisterStartupScript(this.GetType(), "StartUpScript", @"DisableCopyPaste();");

Padmanabhan

[Perry Holman]

It's a better way to use a custom validation control provided by the VS IDE.

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