Asp updating database from dropdown box


15-Nov-2016 20:18

asp updating database from dropdown box-90

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You can access the Grid Editable Item instance directly using e.

Item argument and depending on your edit mode you can get the values manually: In some scenarios, the Extract Values method can be helpful: you are using templates, make sure that you are using the Bind expression in the form controls in your : you can directly try implementing automatic CRUD operations: hope this will prove helpful.

It compiled fine, but when I went to "edit" the record, I received this error: [Argument Out Of Range Exception: 'Drop Down List1' has a Selected Value which is invalid because it does not exist in the list of items. Oh well, I'll keep at it, because this should be an easy fix.

Parameter name: value] I don't really know what that means, but it seems odd that the DDL couldn't find a value, because it was working fine before I put the Bind command in. Actually, looking at what you're trying to do a bit more closely, it looks like what you have is probably OK.

Based on their suggestions, I also added Append Data Bound Items="True" to it, but it doesn't really fix anything.Funny though, when I run the site after adding that, but without the Bind command, the process runs without errors, but the row doesn't update. I tried this on the Northwind sample database and it definitely works. The reason you are getting this error is that you have Categories in the ID-Name-Category table that do not exist in the seperate Categories table.This could be due to a completely missing record, or even a slight typo.Look for this in your data, and you will be able to fix the problem.

After you do that, you should PREVENT this problem from happening by establishing a foreign key relationship between the two tables, and ONLY storing the IDs from Table 2 in Table 1. The reason you are getting this error is that you have Categories in the ID-Name-Category table that do not exist in the separate Categories table.Long story short, I added the Selected Value property to my DDL, and got this error: Argument Out Of Range Exception: 'Drop Down List1' has a Selected Value which is invalid because it does not exist in the list of items.



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