30.DataGrid使用
//添加删除确认:

private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)


{
foreach(DataGridItem di in this.DataGrid1.Items)

{
if(di.ItemType==ListItemType.Item||di.ItemType==ListItemType.AlternatingItem)

{
((LinkButton)di.Cells[8].Controls[0]).Attributes.Add("onclick","return confirm(’确认删除此项吗?’);");
}
}
}

//样式交替:

ListItemType itemType = e.Item.ItemType;

if (itemType == ListItemType.Item )


{
e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor=’#FFFFFF’;";
e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor=’#d9ece1’;cursor=’hand’;" ;
}
else if( itemType == ListItemType.AlternatingItem)


{
e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor=’#a0d7c4’;";
e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor=’#d9ece1’;cursor=’hand’;" ;
}

//添加一个编号列:

DataTable dt= c.ExecuteRtnTableForAccess(sqltxt); //执行sql返回的DataTable
DataColumn dc=dt.Columns.Add("number",System.Type.GetType("System.String"));

for(int i=0;i<dt.Rows.Count;i++)


{
dt.Rows[i]["number"]=(i+1).ToString();
}

DataGrid1.DataSource=dt;
DataGrid1.DataBind();

//DataGrid1中添加一个CheckBox,页面中添加一个全选框

private void CheckBox2_CheckedChanged(object sender, System.EventArgs e)


{
foreach(DataGridItem thisitem in DataGrid1.Items)

{
((CheckBox)thisitem.Cells[0].Controls[1]).Checked=CheckBox2.Checked;
}
}

// 将当前页面中DataGrid1显示的数据全部删除

foreach(DataGridItem thisitem in DataGrid1.Items)


{
if(((CheckBox)thisitem.Cells[0].Controls[1]).Checked)

{
string strloginid= DataGrid1.DataKeys[thisitem.ItemIndex].ToString();
Del (strloginid); //删除函数
}
}
















































































