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I am not sure whether you see the following examples, because you did not finish your post.
However, you can check the Editing an in-memory dataset sample which should suit you well.
If a user makes a data-entry mistake—such as omitting the Product Name field or entering an invalid value for Units In Stock (such as -50) —an exception will be raised from within the depths of the application architecture.
While this exception can be gracefully handled as demonstrated in the previous tutorial, ideally the editing or inserting user interface would include validation controls to prevent a user from entering such invalid data in the first place.
First, create a Grid View with three bound columns and an Update/Edit/Cancel (Command Field) column: Nothing in there should be shocking to anyone: all your events are handled, you have a Hyper Link Field that uses the Data Navigate URLFields property to insert a Product ID, and you have set your Data Key Names property to your hidden field which holds your Product ID.
In this tutorial, we'll see how easy it is to add validation controls to the Template Field's Edit Item Template and Insert Item Template to provide a more foolproof user interface.
Everything should be sorted out when the “Update” link is pressed.
Finally, to pull your hidden value that you’ve dubbed a Data Key in the Grid View’s subroutine.
After working with Data Grids so efficiently, I was scared that Grid Views were going to be a million times more complex.
I suppose my eyes got big when I saw all the new properties and methods, and wanted to try them all out. Most articles I found were for hardcoded datasources (especially on MSDN, ugh) and didn’t really help me much, so this post will be referring to Grid Views with dynamically bound datasources.
In order to provide a customized editing or inserting interface, we need to replace the Bound Field or Check Box Field with a Template Field.