Datakeys in gridview rowupdating

Posted by / 16-Apr-2019 16:49

You access the values stored in the event by index or name: e. So, to update, you might set the parameters as id = e. of course, if I have 20 columns I could define 20 data keys but I just wondered if there is another way instead of: Sql Data Source Locations.

PS: location name is not an integer You don't access the table cells by name. So, basically, instead of looking for table cells, look for the appropriate e. New Values Hi mckrecker, thanks for your reply but I dont need to differ between old and new values since I set a datakey which is the unique ID in my db and I update where unique ID = @unique IDselected of column.

We can achieve the same functionality using Datakeys.

In this example, I am going to retrieve values from categories table of Northwind database. Drag a Grid View into the Web Form and assign Data Key Names property with the primary key column i.e. In the gdview_Row Editing and gdview_Row Deleting event, we have used the below code to retrieve categoryid from datakey of Grid View, int catid = int.

When the Data Key Names property is set, the Grid View control automatically creates a Data Key object for each row in the control.

The Data Key object contains the values of the field or fields specified in the Data Key Names property.

Parameter name: index Another suggestion that failed, which I found online is: Dim action ID As Integer = Convert.

(To hide it from normal users I changed the font color to mach the background color, reduced the font size to minimum) Stupid solution I know, but I hade to invent a workaround as soon as possible.unfortunately my solution won't permit me to hide the field in the background color. A datakey represents the primary key field or field of a record that can uniquely identify it in a data-bound control. Row Index represents the index of the particular row. New Values -- it will have all the values, as does e. There are two in that event so data source controls can differnitate bewteen the two. I just need to get it working with the "real" one from the gridview row Sql Data Source Locations. Add("Location Name Update", Type Code.[String], "dd") Dim select Row As Grid View Row = Grid View Locations.

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Grid View displays the values of a data source in a table where each column represents a field and each row represents a record.

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