DataGrid的使用：（一）、在DataGrid控件中实现基本的操作(编辑、删除、分页)

//使DataGrid的当前行变为编辑状态
private void DataGrid1_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
this.DataGrid1.EditItemIndex =e.Item.ItemIndex;
this.bindgrid ();
}

//撤消所作的修改时使用（点击取消按钮时触发）
private void DataGrid1_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
this.DataGrid1.EditItemIndex =-1;
this.bindgrid ();
}

// 删除当前行时使用（点击删除按钮时触发）
private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
int userid=(int)this.DataGrid1.DataKeys[e.Item.ItemIndex];

string SQLStatement="Delete xtuser WHERE user_id="+userid;
SqlConnection myConnection = new SqlConnection(strcon);
SqlCommand myCommand = new SqlCommand (SQLStatement,myConnection);

myCommand.CommandTimeout = 15;
myCommand.CommandType=CommandType.Text;

try
{
myConnection.Open();
myCommand.ExecuteNonQuery();
myConnection.Close();
}
catch(Exception ee)
{
throw ee;
}
this.DataGrid1.EditItemIndex = -1;
// ds.Tables["user"].Rows.Clear ();
ds.Tables[0].Clear ();
this.sqlDataAdapter1 .Fill (ds,"user");
this.bindgrid();
}

//点击页码时触发，用于简单的分页
private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
this.DataGrid1.CurrentPageIndex =e.NewPageIndex ;
this.bindgrid ();
}

//修改完毕之后，点击更新按钮触发，达到修改的目的
private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
int userid=(int)this.DataGrid1.DataKeys[e.Item.ItemIndex];
string usernc=((TextBox)e.Item.Cells[1].Controls[0]).Text;
string usermc=((TextBox)e.Item.Cells[2].Controls[0]).Text;

string SQLStatement="UPDATE xtuser "+
"SET user_nc='"+usernc+"', "+
"user_mc='"+usermc+"'"+
" WHERE userid ="+userid;

SqlConnection myConnection = new SqlConnection(this.strcon);
SqlCommand myCommand = new SqlCommand(SQLStatement,myConnection);

myCommand.CommandTimeout = 15;
myCommand.CommandType = CommandType.Text;

try
{
myConnection.Open();
myCommand.ExecuteNonQuery();
myConnection.Close();
}
catch(Exception ee)
{
throw ee ;
}

MyDataGrid.EditItemIndex = -1;
this.bindgrid();
}

将数据绑定到DataGrid上
private void bindgrid()
{
this.DataGrid1.DataSource=ds.Tables["user"].DefaultView ;
this.DataGrid1.DataBind ();
}