How to hide a column (GridView) but still access its value?

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I have a GridView with a DataSource (SQL Database). I want to hide a column, but still be able to access the value when I select the record. Can someone show me

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生来不讨喜

2020-11-27 18:27
Define a style in css:
```
.hiddencol { display: none; }
```
Then add the ItemStyle-CssClass="hiddencol" and the HeaderStyle-CssClass="hiddencol" attribute to the grid field:
```
<asp:BoundField DataField="ID" HeaderText="ID" ItemStyle-CssClass="hiddencol"  HeaderStyle-CssClass="hiddencol" ClientIDMode="Static" />
```
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南旧

2020-11-27 18:27

I used a method similar to user496892:

SPBoundField hiddenField = new SPBoundField();
hiddenField.HeaderText = "Header";
hiddenField.DataField = "DataFieldName";
grid.Columns.Add(hiddenField);

grid.DataSource = myDataSource;
grid.DataBind();

hiddenField.Visible = false;

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死守一世寂寞

2020-11-27 18:29
If you do have a TemplateField inside the columns of your GridView and you have, say, a control named blah bound to it. Then place the outlook_id as a HiddenField there like this:
```
<asp:TemplateField HeaderText="OutlookID">
    <ItemTemplate>
        <asp:Label ID="blah" runat="server">Existing Control</asp:Label>
        <asp:HiddenField ID="HiddenOutlookID" runat="server" Value='<%#Eval("Outlook_ID") %>'/>
    </ItemTemplate>
</asp:TemplateField>
```
Now, grab the row in the event you want the outlook_id and then access the control.
For RowDataBound access it like:
```
string outlookid = ((HiddenField)e.Row.FindControl("HiddenOutlookID")).Value;
```
Do get back, if you have trouble accessing the clicked row. And don't forget to mention the event at which you would like to access that.
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抹茶落季

2020-11-27 18:34

<head runat="server">
<title>Accessing GridView Hidden Column value </title>
<style type="text/css">
  .hiddencol
  {
    display: none;
  }
</style>

<asp:BoundField HeaderText="Email ID" DataField="EmailId" ItemStyle-CssClass="hiddencol" HeaderStyle-CssClass="hiddencol" >
</asp:BoundField>

ArrayList EmailList = new ArrayList();
foreach (GridViewRow itemrow in gvEmployeeDetails.Rows)
{
  EmailList.Add(itemrow.Cells[YourIndex].Text);
}

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野性不改

2020-11-27 18:34

You can do it code behind.

Set visible= false for columns after data binding . After that you can again do visibility "true" in row_selection function from grid view .It will work!!

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不知归路

2020-11-27 18:34
When I want access some value from GridView before GridView was appears.
1. I have a BoundField and bind DataField nomally.
2. In RowDataBound event, I do some process in that event.
3. Before GridView was appears I write this:
```
protected void GridviewLecturer_PreRender(object sender, EventArgs e) 
{
    GridviewLecturer.Columns[0].Visible = false;
}
```
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