это может быть сделано, когда событие RowDataBound срабатывает
protected void GridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
// Hide the edit button when some condition is true
// for example, the row contains a certain property
if (someCondition)
{
Button btnEdit = (Button)e.Row.FindControl("btnEdit");
btnEdit.Visible = false;
}
}
}
Вот демонстрационная страница
Разметка
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="DropDownDemo._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>GridView OnRowDataBound Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField HeaderText="Name" DataField="name" />
<asp:BoundField HeaderText="Age" DataField="age" />
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="BtnEdit" runat="server" Text="Edit" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</form>
</body>
</html>
Код позади
using System;
using System.Collections.Generic;
using System.Web.UI.WebControls;
namespace GridViewDemo
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
GridView1.DataSource = GetCustomers();
GridView1.DataBind();
}
protected override void OnInit(EventArgs e)
{
GridView1.RowDataBound += new GridViewRowEventHandler(GridView1_RowDataBound);
base.OnInit(e);
}
void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType != DataControlRowType.DataRow) return;
int age;
if (int.TryParse(e.Row.Cells[1].Text, out age))
if (age == 30)
{
Button btnEdit = (Button) e.Row.FindControl("btnEdit");
btnEdit.Visible = false;
}
}
private static List<Customer> GetCustomers()
{
List<Customer> results = new List<Customer>();
results.Add(new Customer("Steve", 30));
results.Add(new Customer("Brian", 40));
results.Add(new Customer("Dave", 50));
results.Add(new Customer("Bill", 25));
results.Add(new Customer("Rich", 22));
results.Add(new Customer("Bert", 30));
return results;
}
}
public class Customer
{
public string Name {get;set;}
public int Age { get; set; }
public Customer(string name, int age)
{
Name = name;
Age = age;
}
}
}
В демонстрационной версии кнопка «Изменить» не является Видимой (разметка HTML не отправляется клиенту) в тех строках, где возраст Клиента равен 30 *.