GridView 动态添加绑定列和模板列
动态添加绑定列很简单:例如:
GridView1.DataSourceID = "SqlDataSource1";
BoundField bf1 = new BoundField();
BoundField bf2 = new BoundField();
BoundField bf3 = new BoundField();
bf1.HeaderText = "Employee ID";
bf1.DataField = "EmployeeID";
bf1.ReadOnly = true;
bf1.SortExpression = "EmployeeID";
bf2.HeaderText = "First Name";
bf2.DataField = "FirstName";
bf2.SortExpression = "FirstName";
bf3.HeaderText = "Last Name";
bf3.DataField = "LastName";
bf3.SortExpression = "LastName";
CommandField cf = new CommandField();
cf.ButtonType = ButtonType.Button;
cf.ShowCancelButton = true;
cf.ShowEditButton = true;
GridView1.Columns.Add(bf1);
GridView1.Columns.Add(bf2);
GridView1.Columns.Add(bf3);
GridView1.Columns.Add(cf);
动态绑定模板列稍微复杂:
首先创建一个类,该类时继承了System.Web.UI.ITemplate
public class MyTemplate:System.Web.UI.ITemplate
{
private string proName;
public MyTemplate()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
public string ProName//要绑定的数据源字段名称
{
set { proName = value; }
get { return proName; }
}
public void InstantiateIn(Control container)//关键实现这个方法
{
TextBox hi = new TextBox();
hi.Text = "";
hi.DataBinding += new EventHandler(hi_DataBinding);//创建数据绑定事件
container.Controls.Add(hi);
}
void hi_DataBinding(object sender, EventArgs e)
{
TextBox hi = (TextBox)sender;
GridViewRow container = (GridViewRow)hi.NamingContainer;
//关键位置
//使用DataBinder.Eval绑定数据
//ProName,MyTemplate的属性.在创建MyTemplate实例时,为此属性赋值(数据源字段)
hi.Attributes.Add("onclick", "alert('" + DataBinder.Eval(container.DataItem, ProName).ToString() + "');");
}
上面时创建了一个textbox的模板,
页面使用时
2.*.aspx页面后台cs代码
DataSet ds = null;
BLL.model_task bll = new BLL.model_task();
ds = bll.GetList(string.Empty);
TemplateField tf = new TemplateField();
tf.HeaderText = "自定义模板列";
MyTemplate mt = new MyTemplate();
mt.ProName = "ID";//数据源字段
tf.ItemTemplate = mt;
this.GridView1.Columns.Add(tf);
this.GridView1.DataSource = ds;
this.GridView1.DataBind();
这样就会添加了一个textbox的模板列;