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；