Validating event net
Currently the validation occurs on row and cell level.
To get notified, you can use the following events exposed by the Rad Grid View control: It is important to know that each one of the validation events is fired only when the user is trying to commit new data in the Rad Grid View control.
Cancel = true in a validating event (for a textbox for example), how can you make it so the form can be closed? I'm not a big fan of restricting a user's input order, so I stick to just showing errors and disabling Ok buttons.
Microsoft calls this "implicit validation" because the events are fired "implicitly" by . Microsoft refers to coding a call to the Validate or Validate Children method as "explicit validation". Writeline is the fastest and easiest way to check whether that actually happens.--------Click Here to display the illustration--------There are two 'explicit' validation methods:-Validate Children Both have two overloads. The Validate Method You might think that you can trigger the execution of the Validating or Validated events by calling Validate from, for example, a Button, but you can't.
Both Cell Validating and Row Validating events allow you to stop the commit process by setting the boolean property Is Valid to False.
The Cell Validating event occurs when a cell is about to commit new content.
The values can even be combined with a bitwise OR operation which actually results in a logical AND operation between the individual values.
You can choose from: None - validates all child controls Selectable - validates child controls that can be selected Enabled - validates child controls where Enabled is true Visible - validates child controls where Visible is true Tab Stop - validates child controls that have a Tab Stop value Immediate Children - validates child controls that are directly hosted in the container, but not the children of these children One last warning ...