Show Hide Label and TextBox control in GridView ItemTemplate using C# and VB.Net in ASP.Net

Hi comunidadmexi,

Check this example. Now please take its reference and correct your code.

HTML

<asp:GridView ID="gvProducts" runat="server" AutoGenerateColumns="false"
    OnRowDataBound="gvProducts_RowDataBound">
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="Id" />
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:TemplateField HeaderText="Annotation">
            <ItemTemplate>
                <asp:Label ID="lblAnnotation" runat="server" Text='<%# Eval("tannotation") %>' Visible="false"></asp:Label>
                <asp:TextBox ID="txtAnnotation" runat="server" Text='<%# Eval("tannotation") %>' Visible="false"></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3]
        {
            new DataColumn("Id"),
            new DataColumn("Name"),
            new DataColumn("tannotation")
        });
        dt.Rows.Add(1, "Product 1", "ready");
        dt.Rows.Add(2, "Product 2", "other");
        gvProducts.DataSource = dt;
        gvProducts.DataBind();
    }
}

protected void gvProducts_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        if (((DataRowView)e.Row.DataItem).Row["tannotation"] != null)
        {
            if (((DataRowView)e.Row.DataItem).Row["tannotation"].ToString().Contains("ready"))
            {
                (e.Row.FindControl("txtAnnotation") as TextBox).Visible = true;
            }
            else
            {
                (e.Row.FindControl("lblAnnotation") as Label).Visible = true;
            }
        }
        else
        {
            (e.Row.FindControl("lblAnnotation") as Label).Visible = true;
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn(2) {
                            New DataColumn("Id"),
                            New DataColumn("Name"),
                            New DataColumn("tannotation")})
        dt.Rows.Add(1, "Product 1", "ready")
        dt.Rows.Add(2, "Product 2", "other")
        gvProducts.DataSource = dt
        gvProducts.DataBind()
    End If
End Sub

Protected Sub gvProducts_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    If e.Row.RowType = DataControlRowType.DataRow Then
        If CType(e.Row.DataItem, DataRowView).Row("tannotation") IsNot Nothing Then
            If CType(e.Row.DataItem, DataRowView).Row("tannotation").ToString().Contains("ready") Then
                TryCast(e.Row.FindControl("txtAnnotation"), TextBox).Visible = True
            Else
                TryCast(e.Row.FindControl("lblAnnotation"), Label).Visible = True
            End If
        Else
            TryCast(e.Row.FindControl("lblAnnotation"), Label).Visible = True
        End If
    End If
End Sub

Screenshot