如何在后台创建Datagrid?谢谢各位大哥
如何在后台创建datagrid,有模板列.并返回给客户端?谢谢各位大哥 --------------------编程问答-------------------- 为何要在后台创建呢？
是你的列不确定还是什么原因啊？ --------------------编程问答-------------------- protected void CreateDataGrid()
{
DataGrid1.AutoGenerateColumns=false;
DataGrid1.CssClass="border";
DataGrid1.BorderWidth=0;
DataGrid1.CellSpacing=1;
DataGrid1.CellPadding=5;
DataGrid1.ItemStyle.CssClass="item";
DataGrid1.HeaderStyle.CssClass="header";
DataGrid1.DataKeyField="stuid";
//以上设定DataGrid的样式
TemplateColumn tm=new TemplateColumn();
tm.ItemTemplate=new ColumnTemplate1();
tm.HeaderText="姓名";
DataGrid1.Columns.Add(tm);
//建立第一个模板列
TemplateColumn tm2=new TemplateColumn();
tm2.ItemTemplate=new ColumnTemplate2();
tm2.HeaderText="学院";
DataGrid1.Columns.Add(tm2);
//建立第二个模板列
ButtonColumn bc=new ButtonColumn();
bc.ButtonType=ButtonColumnType.PushButton;
bc.CommandName="del";
bc.Text="删除";
DataGrid1.Columns.Add(bc);
//建立删除按钮列
SetBind();
//填充数据
Page.Controls[1].Controls.Add(DataGrid1);
//给页面的form加入这个DataGrid1
}
protected void SetBind()
{
SqlConnection conn=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["conn"]);
SqlDataAdapter da=new SqlDataAdapter("select * from stu,dep where stu.studepid=dep.depid",conn);
DataSet ds=new DataSet();
da.Fill(ds,"table1");
this.DataGrid1.DataSource=ds.Tables["table1"];
this.DataGrid1.DataBind();
}
private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//和上面连接给出的例子中的代码一样，给下拉框绑定数据，并且选择默认的
SqlConnection conn=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["conn"]);
SqlDataAdapter da=new SqlDataAdapter("select * from dep",conn);
DataSet ds=new DataSet();
da.Fill(ds,"table1");
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
{
DropDownList ddl=(DropDownList)e.Item.FindControl("dep");
ddl.DataSource=ds.Tables["table1"];
ddl.DataTextField="depname";
ddl.DataValueField="depid";
ddl.DataBind();
ddl.Items.FindByValue(Convert.ToString(DataBinder.Eval(e.Item.DataItem,"depid"))).Selected=true;
}
}
private void DataGrid1_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if(e.CommandName=="del")
{
SqlConnection conn=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["conn"]);
SqlCommand comm=new SqlCommand("delete from stu where stuid=@id",conn);
SqlParameter parm1=new SqlParameter("@id",SqlDbType.Int);
parm1.Value=this.DataGrid1.DataKeys[e.Item.ItemIndex];
comm.Parameters.Add(parm1);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
SetBind();
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
this.DataGrid1.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);//这里的两个事件千万别忘记，因为DataGrid是后台创建的，这些事件需要自己来写上，vs.net也不会为你创建
}
#endregion
}
public class ColumnTemplate1 : ITemplate
{
//第一个模板列
public void InstantiateIn(Control container)
{
LiteralControl l = new LiteralControl();
l.DataBinding += new EventHandler(this.OnDataBinding);
//数据绑定
container.Controls.Add(l);
//为模板列加入LiteralControl
}
public void OnDataBinding(object sender, EventArgs e)
{
LiteralControl l = (LiteralControl) sender;//LiteralControl发送绑定请求
DataGridItem container = (DataGridItem) l.NamingContainer;
l.Text = ((DataRowView)container.DataItem)["stuname"].ToString();//绑定stuname字段
}
}
public class ColumnTemplate2 : ITemplate
{
//第二个模板列
public void InstantiateIn(Control container)
{
DropDownList dpl = new DropDownList();
dpl.ID="dep";
container.Controls.Add(dpl);
//加入一个id="dep"的下拉框，数据在DataGrid的ItemDataBound中绑定
}
}
--------------------编程问答-------------------- public DataGrid mygrid = new DataGrid();
mygrid.CellPadding=2;
mygrid.Attributes.Add("align","left");
mygrid.CellSpacing=0;
mygrid.Width=784;
mygrid.BorderWidth=1;
//mygrid.BorderColor=ColorTranslator.FromHtml("Black");
mygrid.AutoGenerateColumns=false;
//mygrid.ForeColor=ColorTranslator.FromHtml("Black");
mygrid.Font.Size=9;
mygrid.Font.Name="宋体";
mygrid.Font .Bold = true;
mygrid.AllowPaging = true;
mygrid.PagerStyle .Mode = System.Web.UI.WebControls.PagerMode.NumericPages;
//CssStyleCollection cs = new CssStyleCollection ();
//mygrid.AllowSorting=true;
///sort命令的事件处理器
//mygrid.SortCommand += new DataGridSortCommandEventHandler(Sort_Grid);
///设置headerstyle
//mygrid.HeaderStyle.BackColor=ColorTranslator.FromHtml("Gold");
//mygrid.HeaderStyle.ForeColor=ColorTranslator.FromHtml("Black");
mygrid .HeaderStyle.Font.Name="宋体";
mygrid.HeaderStyle.Font.Size=9;
mygrid.HeaderStyle.Font.Bold=true;
mygrid.HeaderStyle.HorizontalAlign=HorizontalAlign.Center;
///设置alternating style
//mygrid.AlternatingItemStyle.BackColor=ColorTranslator.FromHtml("Silver");
//mygrid.AlternatingItemStyle.ForeColor=ColorTranslator.FromHtml("Black");
///设置itemstyle
//mygrid.ItemStyle.HorizontalAlign=HorizontalAlign.Left;
mygrid.ItemStyle.HorizontalAlign=HorizontalAlign.Center ;
///创建绑定列和属性
BoundColumn FBDM = new BoundColumn ();
BoundColumn NJ = new BoundColumn();
BoundColumn BH = new BoundColumn();
BoundColumn XH = new BoundColumn();
BoundColumn XM = new BoundColumn();
FBDM.HeaderText="分部代码";
FBDM.DataField="FBDM";
//FBDM.SortExpression="FBDM";
NJ.HeaderText="年级";
NJ.DataField="NJ";
//NJ.SortExpression="NJ";
BH.HeaderText="班级";
BH.DataField="BH";
//BH.SortExpression="BH";
XH.HeaderText="学号";
XH.DataField="XH";
//XH.SortExpression="XH";
XM.HeaderText="姓名";
XM.DataField="XM";
//XM.SortExpression="XM";
mygrid.Columns.AddAt(0, FBDM);
mygrid.Columns.AddAt(1, NJ);
mygrid.Columns.AddAt(2, BH);
mygrid.Columns.AddAt(3, XH);
mygrid.Columns.AddAt(4, XM);
--------------------编程问答-------------------- 强 --------------------编程问答-------------------- DataGrid dg = new DataGrid();
dg.AutoGenerateColumns=false;//不启用自动生成列
dg.CssClass="border";//边框样式
dg.BorderWidth=0;
dg.CellSpacing=1;
dg.CellPadding=5;
dg.ItemStyle.CssClass="item";//普通列样式
dg.HeaderStyle.CssClass="header";//头样式
dg.PagerStyle.CssClass="header";//页脚样式
dg.DataKeyField="staff_id";//主键字段
dg.AllowPaging=true;//允许分页
dg.PageSize=500;//分页大小
dg.PagerStyle.Mode=PagerMode.NumericPages;//数字形式分页
BoundColumn col1 = new BoundColumn();
col1.DataField = "staff_id";
col1.HeaderText = "员工ID";
dg.Columns.Add(col1);
SqlDataReader dr; //存放数据
Database db = new Database();
db.RunProc("sp_hr_getstafflist2",out dr);
DataTable dt =Tools.ConvertDataReaderToDataTable(dr);
dg.DataSource = dt.DefaultView;
dg.DataBind();
Page.Controls[1].Controls.Add(dg);
谢谢各位大哥,这是我的代码,能创建普通列.但不能创建模板列,还有就是我想双击一行,弹出窗口,应该怎样做? --------------------编程问答-------------------- 太强了,
DataGrid用的真是炉火纯青!
补充：.NET技术 , ASP.NET
