You could think that the current values are stored in the Before Properties of the item but that’s not true: the Before Properties are unreliable at this point. When the name of the planet is changed, the update is canceled and an error message is returned to the user.
If the name isn’t changed, the changes are saved to the Share Point list.
You can populate the Edit Item Template with data-bound controls to enable users to modify values for the item.
To switch from edit mode to display mode, set this property to -1.
Data Item Index 1 means it will give serial number to each row. The List View control has a built-in editing feature that automatically puts an item in edit mode if you add a button to the item template whose Command Name property is set to Edit. Add Edit Item Template to List View control as shown below: Similar to Edit button Add Command Name for Update button and Cancel button.
As well as add List View events onitemupdating="lv Employee_Item Updating" and onitemcanceling="lv Employee_Item Canceling" respectively.
In the many years I worked for U2U, I worked as technical assistant for Patrick Tisseghem who unfortunately died on 3th September 2008.
Now click on Edit button you will see the following output.
You can also use event receivers to validate the data that the user wants to change.
List Item in an event receiver SPList Item special Item = list. Properties["some_persisted_key"] = "Some Value here"; special Item.
System Update(false); Where would you declare the special Item?