Hide Gridview column when null - asp.net

Question

I have a gridview in the front end showing 4-5 columns. Need to hide one of the column when the values are NULL.
<asp:GridView ID="gvProducts" runat="server" BackColor="#DEBA84"
BorderColor="#DEBA84"
BorderStyle="None" BorderWidth="1px" CellPadding="3"
CellSpacing="2" AutoGenerateColumns="False" AllowPaging="True" PageSize="100" DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="CategoryId" SortExpression="CategoryId" HeaderText="CategoryId" Visible="false" />
<asp:BoundField DataField="MerchantName" HeaderText="MerchantName" SortExpression="MerchantName" />
<asp:BoundField DataField="StoreName" HeaderText="StoreName" SortExpression="StoreName" />
<asp:BoundField DataField="StoreAddress" HeaderText="StoreAddress" SortExpression="StoreAddress" />
<asp:BoundField DataField="City" HeaderText="City" SortExpression="City" />
</Columns>
<FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
<HeaderStyle BackColor="#A55129" Font-Bold="True"
ForeColor="White" />
<PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
<RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True"
ForeColor="White" />
<SortedAscendingCellStyle BackColor="#FFF1D4" />
<SortedAscendingHeaderStyle BackColor="#B95C30" />
<SortedDescendingCellStyle BackColor="#F1E5CE" />
<SortedDescendingHeaderStyle BackColor="#93451F" />
</asp:GridView>
If I want to hide StoreName column from code-behind. How to achieve that ?

Answer 1

You can Use RowDataBound Event of GridView
protected void gridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string val = e.Row.Cells[0].ToString(); //check first cell value
if(string.IsNullorEmpty(val) )
{
gvSearchEngine.Columns[0].Visible = false; //Hides First Column
}
}
}

Answer 2

Yes, you can dynamically create the boundfield values
from code behind based on your requirment
follow this link
add boundField to gridview in codebehind file C#

Answer 3

try e.Row.Cells[0].Controls[0].Visible = false;