How to validate datagrid value against database?

[krypto6969]

Hi -

I'm new at this so any help really appreciated.

I open VS, create a datasource from SQL. I drag over the Datasource which creates a editable datagrid.

Works great, no problems so far.

My users can now edit data in the underlying SQL table.

I need to be able to validate when my user changes a value in my new datagrid - against a different SQL table.

For example (Ill attach what I have so far - not much) in my grid called 'WSI_T_CUSTOM_INSRATE' there is a column called 'DEDCODE'. I need when my user changes the value for DEDCODE in the grid for it to go to a different table called (also a datasource) and insure that the value exists.

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can't seem to get this to check against the dedcode in my table

This is all I have so far which is nothing more then the change event..

 

[jmcilhinney]

Replace the text box column in the grid with a combo box column and then bind your other table to that column just as you would a regular ComboBox control. There's then no need for you to do any validation because the user will simply select an item from the drop-down list that came from the database in the first place. Here's an example although the details will be slightly different in your case:

Adding a ComboBox Column to a DataGridView