Intersoft WebCombo Documentation
How-to: Validate string only input in OnKeyDown client side events
See Also Send comments on this topic.

Intersoft WebCombo > WebCombo Features Overview > Client-side Programming How-to Topics > How-to: Validate string only input in OnKeyDown client side events

In order to validate string only input, you can use OnKeyDown Client-side event in WebCombo.

In this topic, you will learn how to implement the method.

To validate string only input Client-side event

Drag a WebCombo instance into the WebForm.

Add the following code in client side:

JavaScript

Copy Code

function WebCombo1_OnKeyDown()
{           
    var n ="";
    var e = window.event;
    
    if (48<=e.keyCode && e.keyCode<=57)
            n = e.keyCode - 48;
    else
            if (96<=e.keyCode && e.keyCode<=105)
                    n = e.keyCode - 96;
            else
                    if (e.keyCode==110 || e.keyCode==190)
                            n = "."; 
    if (n != "")
       return false;       
    else
       return true; 
}

Invoke WebCombo1_OnKeyDown() function in OnKeyDown client side event of WebCombo.
Run the project.

To validate string only input Client-side event

See Also