conditionally show hide asp.net Gridview column
asp.net, c#, gridview, visible
Solution
you can use gridview column index to hide the particular column
Code could be
if(Request.QueryString.Get("show")=="all")
GridView1.Columns[1].Visible=true;
else
GridView1.Columns[1].Visible=false;
More detail
GridView Hide Column by code
Edit 3
Settings in ASPX/ASCX can not be done directly.
<%= %> outputs directly to the response stream, and the asp markup is not part of the response stream. Its a mistake to assume the <%= %> operators are performing any kind of preprocessing on the asp markup.
More explanation
Why will <%= %> expressions as property values on a server-controls lead to a compile errors?
Edit 1
I think yes
<asp:BoundField HeaderText="ColumnTwo"
Visible='<% if (Request.QueryString.Get("all") == "all" ) "true" else "false" %>'/>
You will have to check for the syntex
Edit 2
Try this
Visible='<% Request.QueryString.Get("all") == "all"? "true": "false"%>'
Problem
This is how I navigate to `myPage.aspx` , ``` <a href='~/myPage.aspx?show=<%#Eval("id")%>' id="showEach" runat="server">Show Each</a> <a href="~/myPage.aspx?show=all" id="showAll" runat="server">Show All</a> ``` And I have a gridview in `myPage.aspx` ``` <asp:GridView ID="GridView1" runat="server"> <Columns> <asp:BoundField HeaderText="ColumnOne" Visible="true"/> <asp:BoundField HeaderText="ColumnTwo" Visible="true"/> </Columns> </asp:GridView> ``` What I want to do is , if Query String is equal to `all`(~/myPage.aspx?show=all) , I want to set GridView1's `Column2`'s visible to true , else , set visible to false . How can I do it ?