problem in implementing validations in dynamically generated textboxes in Desktop vb.net application

[Amit Spadez]

Hello coders, I am getting one problem in the saving the items information. I have taken one textbox for the NumberOfAssets based on which further generates the respective textboxes. And Before saving the information, I want to implement the validation check on those dynamically generated textboxes i.e. those textboxes must not be empty. For instance, If I enter 3 (integer value) in the "NumberOfAssets" textbox, it further generates the 3 textboxes, And before saving the window form, there must be a validation check for those 3 textboxes. I could not come up with the solution that how to put the validation using For Loop and where to do it as well.. please help ...

[Lost User]

Hi, You'd need to hook up the Validating[^] event. Below is an example on validating a control from that event;

void onValidating(object sender, CancelEventArgs e)
{
TextBox senderBox = sender as TextBox;

if (senderBox.Text.Length == 0)
{
	e.Cancel = true;
	System.Media.SystemSounds.Beep.Play();
}

}

..and this is the code to hook up the event. You'd need something similar to this in your For-loop.

myTextBox.Validating += new CancelEventHandler(onValidating);

Good luck :)

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