自定义控件中的GridView RowCommand事件

问题描述

你好，

我正在创建一个自定义控件.我在该控件中添加了一个GridView，如下所示.

Hello,

I am creating a custom control. I added a GridView in that control as below.

        protected override void OnInit(EventArgs e)
        {
            SqlConnection con = new SqlConnection(connectionString);
            DataSet ds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(query, con);
            da.Fill(ds);

            TemplateField tf = new TemplateField();
            tf.HeaderTemplate = new GridViewExtension(ListItemType.Header, "To Delete");
            tf.ItemTemplate = new GridViewExtension(ListItemType.Item, "To Delete");

            gvData.Columns.Add(tf);
            gvData.RowCommand += new GridViewCommandEventHandler(gvData_RowCommand);
            gvData.DataSource = ds;
            gvData.DataBind();
            gvData.Columns.Insert(0, tf);
        }


protected override void RenderContents(HtmlTextWriter output)
{
    gvData.RenderControl(output);
}

出现带有删除图像按钮的Gridview.

我需要编写代码以自行删除该控件中的行.我尝试使用RowCommand，但是它不起作用.是否有任何方法可以触发事件以删除记录?

Gridview is appearing with delete image button.

I need to write code for delete the row in that control it self. I tried with RowCommand but its not working.Is there any way to fire an event to delete the record?

推荐答案

// Generate Row Delete Event and then write following Code

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {

        GridView YourGrid= sender as GridView;

     }

protected void Page_Load(object sender, EventArgs e)
        {
            TemplateField tf = new TemplateField();
            tf.ItemTemplate = new MyTemplateField();
            GridView1.Columns.Add(tf);
            GridView1.RowCommand += new GridViewCommandEventHandler(GridView1_RowCommand);
            GridView1.DataSource = NewDataTable();
            GridView1.DataBind();
        }

模板字段

template field

public class MyTemplateField : Control, ITemplate
    {
        Button btn;
        public MyTemplateField()
        {
            btn = new Button();
            btn.ID = "this button";
            btn.Text = "Im the button";
            btn.Click += new EventHandler(btn_Click);
        }
        void btn_Click(object sender, EventArgs e)
        {
            //GridView gridView = (sender as Button).NamingContainer as GridView ;
            CommandEventArgs cea = new CommandEventArgs("cmd",btn);
            //below line will bubble the event and gridview will capture it in RowCommand event handler
            RaiseBubbleEvent(btn, cea);
        }

        public void InstantiateIn(Control container)
        {
            container.Controls.Add(btn);
        }
    }

您需要对事件进行冒泡.

希望它能工作.它对我有效；)

谢谢，
Hemant

you need to bubble the event.

Hope it will work. it worked at my end ;)

Thanks,
Hemant

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