1. 使用GridView自带属性ShowEditButton和ShowDeleteButton，均设为True
<Columns>
...
<asp:CommandField ShowEditButton="True" ShowDeleteButton="True"></asp:CommandField>
</Columns>
则在GridView指定列的位置会显示Edit和Delete的LinkButton
2. 在GridView中添加Edit和Delete的响应函数
点击Edit按钮后，该行纪录进入编辑模式，同时Edit按钮变为Update和Cancle两个按钮，因此需添加与Edit相关的3个函数
点击Delete按钮后弹出确认框，此事件需要在RowDataBound方法中绑定，因此需要为GridView添加RowDataBound函数
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="Id"
...
OnRowDataBound="GridView1_RowDataBound"
OnRowEditing="GridView1_RowEditing"
OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowUpdating="GridView1_RowUpdating"
OnRowDeleting="GridView1_RowDeleting"
...
>
3. 在RowDataBound中为Delete按钮绑定弹出确认框
点击Delete前按钮为 Edit Delete
点击Delete后按钮为 Update Cancle
为Delete按钮绑定弹出确认框事件时，首先需要获取Delete按钮，事实上无法直接获取Delete按钮，只能通过Delete按钮的位置来获取(如是当前行第几列的第几个按钮)，进而为此按钮绑定事件
为Delete按钮绑定弹出确认框事件后，发现GridView隔行出现:点击Edit -> Cancle弹出“确定删除？”确认框
由于GridView中RowType有Header、Footer、DataRow、Pager等类型，一般只有数据行(类型为DataRow)才会有Delete按钮，因此首先应判断是否为数据行
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//数据行每一行第6列第2个控件为Delete按钮,第一个控件为Edit按钮(下标为0),Edit按钮和Delete按钮之间还有一个空格(下标为1)
LinkButton lbtn = (LinkButton)e.Row.Cells[6].Controls[2];
//判断所取得控件的名称是否为Delete,为了避免点击Edit后出现Update Cancle会为Cancle按钮绑定弹出窗口的情况
if (lbtn.CommandName == "Delete")
{
lbtn.OnClientClick = "return confirm('Do you really want to delete?');";
}
}
}
4. GridView Edit
//点击某行Edit按钮该行进入编辑状态
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
//DataBind是GridView数据源绑定函数
DataBind();
}
//将某行编辑后的值更新到数据库
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int id = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString());
String name = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text.ToString().Trim();
...
int flag = updateDatabase();
if (flag == 0)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "<script>alert('Updated Successfully!');</script>");
}
else
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "<script>alert('Failed to update!');</script>");
}
GridView1.EditIndex = -1;
DataBind();
}
//取消编辑
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
DataBind();
}
5. GridView Delete
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
String id = GridView1.DataKeys[e.RowIndex].Value.ToString();
int flag = deleteFromDatabase();
if (flag == 0)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "<script>alert('Deleted Successfully!');</script>");
}
else
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "<script>alert('Failed to delete!');</script>");
}
DataBind();
}