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.Many a times in our applications we use primary keys to get control of the particular record in the gridview. " Select Command="SELECT a.tenantcode, a.name, a.fixedrate, a.percentrate, a.percentage, b.locationd, c.status FROM TENANTNEW AS a INNER JOIN LOCATION AS b ON a.
event is raised when a row's Update button is clicked, but before the Grid View control updates the row.
This enables you to provide an event-handling method that performs a custom routine, such as canceling the update operation, whenever this event occurs.
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.
I know how to update with HTML, But I want in C# How To Update protected void Price Ep_Row Updating(object sender, Grid View Update Event Args e) How to Update with The Help Of Csharp. Regards atul singh in gridview property go to Events there doublic click of Row Updating Event which will automaticall redirect into code behind... But when i used it again this code it returns the old value... In the gridview i set the column for example City column into a template and set the name to txt City. EDIT: I made a little mistake in the previous post: the event handler is Row Updating; Row Updated won't trigger for the life of me. in the above code in "Text Box txtcity = (textbox)row.findcontrol("txtcity");" i'm getting the default value which is not updated, but not updated value.
Save all or press "Ctrl S" and hit "F5" to run the page, the page will look as in the following image: Click on "Edit the Grid View", it will display Textboxes in each cell as in the following image: Edit the value(s) here and click on the Update link, it will update all the data or to remove it click on the "Delete" link above the image shown.
One note will be helpful for you, while describing Columns in Grid View if you are using a boundfield then create objects of the control using cells[index] in the rowupdateing event of Grid View, but if you are using controls itself like Label or textboxes etc then use Fincontrol("stringid").Follow this link for more details --While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference.event is raised when a row's Edit button is clicked, but before the Grid View control enters edit mode.Inside the Row Updating event u can code for updation ex: Protected Sub Grid View1_Row Updating(By Val sender As Object, By Val e As System. Thanks a bunch to you and the Regards Hema '''''''''''''''''''''''''''''''''''''''''''''''''' ''''''''''''''''''''''''''''''''''''''''' reply From Brianbk [email protected] The code it update Datagridview believe me was running try this one Dim constr As String = "Data Source=localhost; Integrated Security=True" Dim sqlstr As String = "select * from Customers" Dim dt As New Data Table() Private Sub btn Load_Click(By Val sender As System. Clear() 'fill the datatable with data in the Database Dim dpt As New Sql Data Adapter(sqlstr, constr) dpt. Dispose() 'display the Table in the datagrid datagridview1. i have a problem with this code which i used it before and it really works. Now the code of Grid View rowupdating events is: Text Box txt City = (Text Box)Grid View1.(Text Box)Grid View1. Text was the updated value but the old value returns. i compared also my source code into the other which is working but there is no difference from it. Related to this problem, but much worse: I have a Grid View, which isn't bound in the ways mentioned above; I need to use a custom data source, and create the data grid cells programmatically from it. But within the Row Update event handler, everything goes null. Sorry for the wrapping in the second snippet, I just don't think there's a way to make it more eye-friendly, even if I'd raze the leading spaces. protected void Grid View1_Row Updating(object sender, Grid View Update Event Args e) please help me. before that i want just using Find control and casting and then retrieving all lot code. If values are same they could notify user to change the value(give new cell value).