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Value in rowupdating event
In Enemies That Vallue me back at the back own: Level and help a GridView have on the web going. For instance, the GridViewRowEditing left's e parameter helps the NewEditIndex white though, it benefits to be off by 1 so you lose to increment it before giving. When the user benefits on the Few button for a row, you can addition that row through the GridView's SelectedRow left.
In a GridView, Vlue need to Valke the user the ability to "mark" a row. When the user clicks on the Select button for a row, you can access that row through the GridView's SelectedRow property. With a row selected, the code Value in rowupdating event pull out a particular Cell's roqupdating you just specify the Cell: At design time, set the View's DataKeyNames property to the name of the field you want. Then, at run time you can retrieve the value of the field for the selected row through the view's SelectedValue property in a GridView the user must select a row first: When a row is in Edit mode, the Cells become populated with some control usually a text box.
For this scenario, you need to go one step further and retrieve the control inside the Cell and cast it to the appropriate type.
ComponentOne / ASP.NET Web Forms Edition Forum
For a GridView, the EditIndex property will tell you which row rlwupdating currently being edited. Fortunately, there's only one control in a cell, so it's always Controls 0 that you want, as seen here. But what if you've turned Value in rowupdating event column into a template column and replaced the control in Valie cell? In that case, since you know the name of the rowupdatign, I'd use Value in rowupdating event FindControl method. Since the FormView is, essentially, nothing but templates, you should always use FindControl. In Events That leaves me back at the original question: Many of the GridView events pass you the selected row as one of the properties on the e parameter.
You can use this property as you would the SelectedRow: Drag and drop a GridView control on the web form. Open its smart tag and configure it as shown in Figure 4. This will add four BoundFields to the GridView. We also enable paging, sorting and editing features of the GridView. Client side validation using validation controls By default when the GridView controls goes in edit mode, it displays TextBoxes for entering values. You can not attach validation controls directly to these TextBoxes. We need to convert these BoundFields to TemplateFields.
In order to do so select "Edit Columns This will open Fields dialog as shown in Figure 5. This will convert them from BoundField to TemplateField. This will display the template designer for the column as shown in Figure 6. Also, set its ErrorMessage property to "Please enter company name". Note that by default all validation controls validate on the client side. Right click on the GridView and select "End template editing" Run the web form.
Click on the Edit button of the GridView so that it goes into the edit mode. Rowupdatign CompanyName blank and click on Update button. You should see an error message as shown in Figure 7. This way you can attach client side validation controls to the GridView columns. Server side validation using validation controls Let's proceed further by validating on the server side.