I have a GridView where input in Column1 depends on the input Column2.
N in Column2 the system will put a Y in Column1.The Validatons are implemented using Regexs and Custom validation. I would prefer a validation solution that doesn't use JavaScript.
|Column1| Column2| __________________ | Y | N __________________ |N | Y __________________ |N | N
How can I validate these entries in the Gridview without using JavaScript?
Why not use two radio buttons?
<asp:templatefield>
<itemtemplate>
<asp:radiobutton id="rbYes" runat="server" groupname="YesNo" text="Yes" />
<asp:radiobutton id="rbNo" runat="server" groupname="YesNo" text="No" />
</itemtemplate>
</asp:templatefield>
You could use radio buttons and the 'Template' column feature of a GridView. The GridView markup would look like this:
<asp:GridView ID="gvTest" runat="server" AutoGenerateColumns="false"
OnRowDataBound="gvTest_RowDataBound">
<Columns>
<asp:TemplateField HeaderText="Column 1">
<ItemTemplate>
<asp:RadioButton ID="rbSelect1" runat="server" Text="" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Column 2">
<ItemTemplate>
<asp:RadioButton ID="rbSelect2" runat="server" Text="" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
The trick then would be to correctly set the 'GroupName' property of each radio button so that each row of the resulting grid is treated as a single radio button group by the browser. That's where the 'OnRowDataBound' handler specified on the grid comes into play. The definition of the 'gvTest_RowDataBound' handler method could be something like:
protected void gvTest_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
RadioButton rb1 = (RadioButton)e.Row.FindControl("rbSelect1");
RadioButton rb2 = (RadioButton)e.Row.FindControl("rbSelect2");
rb1.GroupName = rb2.GroupName = string.Format("Select_{0}", e.Row.RowIndex);
}
}
By appending the row index to the group name to both of the radio buttons in each row you're going to ensure that the browser will treat them as a group and only allow the selection of one value per row. The result would look something like this:
