data conversion error

[dollarbillg]

Help

After the user enters data in a textbox and has moved to another control on the form. If the user needs to change previosly entered data in that text box and clicks the mouse to change the data I get the following error.



An unhandled exception of type 'System.InvalidCastException' occurred in system.windows.forms.dll

Additional information: Cast from string "" to type 'Double' is not valid.

Please Help!

 

[olichap]

Is the textbox bound to a data object (a field in a datatable maybe)? If so then that field may be of the Double type. You'd then have to convert the string to a number if you're expecting the user to update the datatable.

O.