Getting data from GridView on Button_Click

Question

My problem is:

I have a GridView, which is bound to list of declared DTO objects with column of CheckBoxes. Also, I have a "Save" button on the page. My mission concludes in getting all rows, where CheckBox is checked and get the containing data. Unfortunately, row.DataItem = null on Button1_Click, because, I'm using if(!IsPostBack) gw.DataBind() statement (otherwise, I can't get CheckBox status). Could you give me the best practice for solving my problem?

Thank you in advance!

Oliver Spryn · Accepted Answer · 2014-08-14 11:18:46Z

1

If you do if(!IsPostBack) --> gw.DataBind(), that will reinitialize your GridView and the checkboxes will be set to unchecked again.

In your case, in Button1_Click event, you can loop through each DataRow on your GridView and find the row which has it's checkbox checked and get all the selected row data.

foreach (GridViewRow gvRow in gw.Rows) {
// Find your checkbox
    CheckBox chkBox = (CheckBox)gvRow.FindControl("checkBox");

    if (chkBox.Checked) {
    // Get your values 
        string value1 = gvRow.Cells[1].Text;
        string value2 = gvRow.Cells[2].Text;
        // etc...
    }
}

edited Aug 14, 2014 at 11:18

Oliver Spryn

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answered Feb 5, 2012 at 18:47

antar

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7 Comments

insomnium_ Over a year ago

That's why I'm stuck. If I DataBind every time page loads, I can't get CheckBox values. If I use !IsPostBack -> row.DataItem == null ,so I can't get row's data.

insomnium_ Over a year ago

Please, explain, how I'm supposed to get all the row data?

insomnium_ Over a year ago

gvRow.Cells[1].ToString() gives me "System.Web.UI.WebControls.DataControlFieldCell", not the containing value.

insomnium_ Over a year ago

I tried to use foreach(var row in GridView.Rows) var myObject=row.DataItem; But DataItem = null

antar Over a year ago

It should be gvRow.Cells[1].Text, sorry abt that

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