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.
Conditionally Hide or disable Gridview commandfield buttonfield in asp.net.
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 Code

   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

1:  protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)  
2:  {  
3:       if (e.Row.RowType == DataControlRowType.DataRow)  
4:       {  
5:            string country = DataBinder.Eval(e.Row.DataItem, "Country").ToString();  
6:            if (country == "Mexico")  
7:            {  
8:                 LinkButton lb = (LinkButton)e.Row.Cells[0].Controls[0];  
9:                 lb.Visible = false;  
10:            }  
11:            else if (country == "Germany")  
12:            {  
13:                 e.Row.Cells[0].Enabled = false;  
14:            }  
15:       }  
16:  }  
17:  protected bool ShowHide(object country)  
18:  {  
19:       if (country.ToString() == "France")  
20:            return false;  
21:       else  
22:            return true;  
23:  }  

VB Code

1:  Protected Sub GridView1_RowDataBound(sender As Object, e As GridViewRowEventArgs)  
2:       If e.Row.RowType = DataControlRowType.DataRow Then  
3:            Dim country As String = DataBinder.Eval(e.Row.DataItem, "Country").ToString()  
4:            If country = "Mexico" Then  
5:                 Dim lb As LinkButton = DirectCast(e.Row.Cells(0).Controls(0), LinkButton)  
6:                 lb.Visible = False  
7:            ElseIf country = "Germany" Then  
8:                 e.Row.Cells(0).Enabled = False  
9:            End If  
10:       End If  
11:  End Sub  
12:  Protected Function ShowHide(country As Object) As Boolean  
13:       If country.ToString() = "France" Then  
14:            Return False  
15:       Else  
16:            Return True  
17:       End If  
18:  End Function  

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