RadDropDown Text Validation

[Sr]

Hi,

I have a RadDropdownlist which should allow the user to type in only numeric values in it. Validations in Key_Down and Key_Press event does fire but it is not working. I have similar validations for normal textboxes and it is working.

Is there are any ways to restrict the user to type only numeric values in RadDropDown?

private bool nonNumberEntered = false;

 protected void radDDLAccountNo_KeyDown(Object sender, KeyEventArgs e)

        {

            ValidateNumericField(e);

        }

        private void radDDLAccountNo_KeyPress(Object sender, KeyPressEventArgs e)

        {

            KeyPressEvent(e);           

        }

private void ValidateNumericField(KeyEventArgs e)

        {

            nonNumberEntered = false;

            if (e.KeyCode < Keys.D0 || e.KeyCode > Keys.D9)

            {

                if (e.KeyCode < Keys.NumPad0 || e.KeyCode > Keys.NumPad9)

                {

                    if (e.KeyCode != Keys.Back)

                        nonNumberEntered = true;

                }

            }

            if (Control.ModifierKeys == Keys.Shift)

                nonNumberEntered = true;

        }

        private void KeyPressEvent(KeyPressEventArgs e)

        {

            if (nonNumberEntered == true)

            {

                e.Handled = true;

            }

        }

   

Thank you in advance for the help.

[Stefan]

Hello,

Thank you for writing.

I have tested your code with our latest version is it seems to be working OK. Attached you can find a sample project demonstrating my tests. Additionally, you can find another way to achieve the same - by using the TextChanging event of the inner text box. 

If you continue experiencing such issues, please open a new support ticket and attach your project there. We will investigate the reasons causing them and we will get back to you.
 
Kind regards,
Stefan
the Telerik team

[Sr]

Thank you Stefan.

DropDownListElement.EditableElement.TextBox.TextBoxItem.TextChanging worked well. When I was browsing through the forums/tutorials, I could not find there is such event exist. Is there any place where you guys list all the properties/events of controls?

Thanks again for the help.

[Stefan]

Hello,

The members of a class can be found in our API reference documentation, which is part of our online documentation. Here is a link to the desired RadDropDownListElement members:http://www.telerik.com/help/winforms/allmembers_t_telerik_wincontrols_ui_raddropdownlistelement.html

I hope this helps.

Greetings,
Stefan
the Telerik team