Multiple row selection in a web
DataGrid is a usual requirement and the common and most elegant way to implement that is definitely using
CheckBox(s). A checkbox column must of course be accompanied with a CheckAll / UnCheckAll functionality.
After searching this site, I was surprised not to find anything that suited this requirement completely. I did however find what I was looking for in different segments (acknowledged below). I decided to compile all what I needed in a reusable class / library (for reference). Following is the functionality provided:
- Checkbox column for
- CheckAll, UnCheckAll checkbox in the header without PostBack to the server.
How to use
Download the supplied .cs file and add to your project. (If your project is in another language, create a new library project and add the supplied .cs to that project, compile the library, and attach the resulting .dll as a reference to your project).
TagPrefix in your aspx page for the new column as follows:
<%@ Register TagPrefix="GridSelectCheckBox" Namespace="solCommon.Web.UI.DataGrid"
This is, of course, a snippet from my code, you can register any
TagPrefix in your page. Should you change the namespace in the supplied .cs file, replace the
Namespace attribute accordingly. The
Assembly attribute must be your project/library assembly.
The next logical step is to include the column in your
DataGrid. You may include the column at any location. Following adds the column at location 0, i.e. the first column:
Lastly, we use the exposed
static method of
Page_Load method of your aspx page, add the following line:
You should replace "
Form1" with the name of the form in which your
DataGrid is now ready.
You can get the selected indexes or the selected
DataKeys by calling one of the exposed properties, i.e.
DGCheckBoxColumn.SelectedDataKeys. Let's say, in your button click event handler you try the following:
DGCheckBoxColumn dgchkbxCol = (DGCheckBoxColumn)myGrid.Columns;
foreach (int i in dgchkbxCol.SelectedIndexes)
I must thank the following two articles as I have used much of their contents:
Usage and Copyrights
You may freely use/modify the supplied file for your own usage, as long as you retain the acknowledgements presented above. Please don't forget to rate this article. Thanks and good luck.