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

---

show source

01protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

02    {

03        if (e.Row.RowType == DataControlRowType.DataRow)

04        {

05            string country = DataBinder.Eval(e.Row.DataItem, "Country").ToString();

06            if (country == "Mexico")

07            {

08 

09                LinkButton lb = (LinkButton)e.Row.Cells[0].Controls[0];

10                lb.Visible = false;

11            }

12            else if (country == "Germany")

13            {

14                e.Row.Cells[0].Enabled = false;

15            }

16 

17        }

18    }

19 

20    protected bool ShowHide(object country)

21    {

22        if (country.ToString() == "France")

23            return false;

24        else

25            return true;

26    }

VB.NET CODE

---

show source

01Protected Sub GridView1_RowDataBound(sender As Object, e As GridViewRowEventArgs)

02 If e.Row.RowType = DataControlRowType.DataRow Then

03  Dim country As String = DataBinder.Eval(e.Row.DataItem, "Country").ToString()

04  If country = "Mexico" Then

05 

06   Dim lb As LinkButton = DirectCast(e.Row.Cells(0).Controls(0), LinkButton)

07   lb.Visible = False

08  ElseIf country = "Germany" Then

09   e.Row.Cells(0).Enabled = False

10 

11  End If

12 End If

13End Sub

14 

15Protected Function ShowHide(country As Object) As Boolean

16 If country.ToString() = "France" Then

17  Return False

18 Else

19  Return True

20 End If

21End Function

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