Hide Disable CommandField ButtonField In GridView Asp.Net

In this example i'm going to explain how to Conditionally Hide Or Disable GridView CommandField Or ButtonField Programmatically In Asp.Net Using C# And VB

I'll use field such as Select,ShowEditButton and controls in TemplateField for this demo.

Northwind Databse is used to populate GridView.

Enable selection from smart tag in design mode to show SelectButton Hyperlink in Gridview.

This Linkbutton will be hidden where country name is equal to Mexico and disabled where name is Germany in any row of grid as shown above in image.

Checkbox Control placed in ItemTemplate will also be covered.


HTML SOURCE OF GRIDVIEW

---

   1:  <asp:GridView ID="GridView1" runat="server" 

   2:                DataSourceID="sqlDataSourceGridView" 

   3:                onrowdatabound="GridView1_RowDataBound" 

   4:                AutoGenerateColumns="false">

   5:  <Columns>

   6:  <asp:CommandField ShowSelectButton="True"/>

   7:              

   8:  <asp:TemplateField>

   9:  <ItemTemplate>

  10:  <asp:CheckBox ID="chkSelect" runat="server" 

  11:             Visible='<%# ShowHide(Eval("Country"))%>'/>

  12:  </ItemTemplate>

  13:  </asp:TemplateField>

  14:  <asp:BoundField DataField="CustomerID" 

  15:                  HeaderText="Customer ID"/>

  16:  <asp:BoundField DataField="City" HeaderText="city"/>

  17:  <asp:BoundField DataField="Country" 

  18:                  HeaderText="Country"/>

  19:  </Columns>

  20:  </asp:GridView>

  21:                 

  22:  <asp:SqlDataSource ID="sqlDataSourceGridView" 

  23:                     runat="server" 

  24:                     ConnectionString=

  25:  "<%$ ConnectionStrings:northWindConnectionString %>" 

  26:  SelectCommand="SELECT [CustomerID], [City], [Country] 

  27:                 FROM [Customers]">

  28:  </asp:SqlDataSource>

C# CODE

---

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            string country = DataBinder.Eval(e.Row.DataItem, "Country").ToString();
            if (country == "Mexico")
            {
               
                LinkButton lb = (LinkButton)e.Row.Cells[0].Controls[0];
                lb.Visible = false;
            }
            else if (country == "Germany")
            {
                e.Row.Cells[0].Enabled = false;
            }

        }
    }

    protected bool ShowHide(object country)
    {
        if (country.ToString() == "France")
            return false;
        else
            return true;
    }

VB.NET CODE

---

Protected Sub GridView1_RowDataBound(sender As Object, e As GridViewRowEventArgs)
 If e.Row.RowType = DataControlRowType.DataRow Then
  Dim country As String = DataBinder.Eval(e.Row.DataItem, "Country").ToString()
  If country = "Mexico" Then

   Dim lb As LinkButton = DirectCast(e.Row.Cells(0).Controls(0), LinkButton)
   lb.Visible = False
  ElseIf country = "Germany" Then
   e.Row.Cells(0).Enabled = False

  End If
 End If
End Sub

Protected Function ShowHide(country As Object) As Boolean
 If country.ToString() = "France" Then
  Return False
 Else
  Return True
 End If
End Function

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