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ASP GridView invisible cell value

sborchers asked
Last Modified: 2008-01-09
I have a GridView with multiple columns, some are invisible, how can I get the value of that invisible field into a textbox or label?  
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You can databind the textbox to the appropriate datasource, if your using one...  What are you using?



I only want or need the data from the GridView if they 'Select' it, which moves the data to textboxes that they will edit, then save the changes.  It is reading from a SQL Server database, I could call another stored procedure when they click on the row they want to edit, but I thought since the data is all ready in the GridView (as an Invisible field), i would move that to the textboxes.
Ashley BryantSenior Software Engineer

You can only pull over data from the gridview that is either part of the datakeys or visible in the gridview.  This is because those are the only items that the viewstate maintains.  So, either make your invisible fields part of the viewstate, or do a separate query to pull the complete data record that you selected in the gridview.

You could also use a detailsview with the same sqldatasource (or whatever data source you are using) so that they're using the same query string, but I'm pretty sure it will still make another query to the database.
DataGridItem item;
item = MyGrid.Items(intRow);
strName = item.Cells[0].Text().Trim()

if  0th cell contains hidden data then you can fetch values like
strName = item.Cells[0].Text().Trim()

where item is dataGridItem object.. you can get these object from eventarguments of itemselected event of datagrid


The other option you could use is to get the primary key from the selected row of the gridview, and retrieve the full row from the database or dataset, and then populate any information you need from the datarow, that way, you don't have to worry about data that isn't in your gridview.

Let me know if you need help with that.

Ashley BryantSenior Software Engineer

Does that work with GridView as well, renjurdevan?

I did find this quick article that basically says what you want to do:

If your lazy like me (and most good coders :-) ) just set the width to be 0.  Then you can refer to it, but it does not appear.


Do you have an example you could share?

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