gridview如何实现后台插入模板列,加入dropdownlist控件? gridview如何实现后台插入模板列,加入dropdownlist控件? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class Default2 : System.Web.UI.Page{ public class GridViewTemplate : ITemplate { private DataControlRowType templateType; private string columnName; public GridViewTemplate(DataControlRowType type, string colname) { templateType = type; columnName = colname; } public void InstantiateIn(System.Web.UI.Control container) { switch (templateType) { case DataControlRowType.Header: Literal lc = new Literal(); lc.Text = "<B>新加的</B>"; container.Controls.Add(lc); break; case DataControlRowType.DataRow: DropDownList drr = new DropDownList(); drr.Items.Add(new ListItem("AA", "a")); drr.Items.Add(new ListItem("BB", "b")); drr.Items.Add(new ListItem("CC", "c")); //drr.DataBinding += new EventHandler(this.drr_DataBinding); container.Controls.Add(drr); break; default: break; } } private void drr_DataBinding(Object sender, EventArgs e) { //也可以进行数据的绑定在这里执行 } } void Page_Load(Object sender, EventArgs e) { if (!IsPostBack) { TemplateField customField = new TemplateField(); customField.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "Title"); GridView1.Columns.Add(customField); } }} 一个拷贝就能运行的例子<%@ Page Language="C#" %><%@ Import Namespace="System.Data" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> ICollection CreateDataSource() { DataTable dt = new DataTable(); DataRow dr; dt.Columns.Add(new DataColumn("id", typeof(Int32))); dt.Columns.Add(new DataColumn("text", typeof(string))); for (int i = 0; i < 6; i++) { dr = dt.NewRow(); dr[0] = i; dr[1] = "列表项目 " + i.ToString(); dt.Rows.Add(dr); } DataView dv = new DataView(dt); return dv; } public class GridViewTemplate : ITemplate { private DataControlRowType templateType; private string columnName; public GridViewTemplate( DataControlRowType type, string colname ) { templateType = type; columnName = colname; } public void InstantiateIn( System.Web.UI.Control container ) { switch (templateType) { case DataControlRowType.Header: Literal lc = new Literal(); lc.Text = columnName; container.Controls.Add(lc); break; case DataControlRowType.DataRow: DropDownList drr = new DropDownList(); drr.ID = "dropdown"; drr.AppendDataBoundItems = true; drr.Items.Add(new ListItem("-----请选择------","")); drr.Items.Add(new ListItem("AA", "a")); drr.Items.Add(new ListItem("BB", "b")); drr.Items.Add(new ListItem("CC", "c")); container.Controls.Add(drr); break; default: break; } } } protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { TemplateField customField = new TemplateField(); customField.ShowHeader = true; customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "动态添加列"); customField.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, ""); GridView1.Columns.Add(customField); GridView1.DataSource = CreateDataSource(); GridView1.DataBind(); } } protected void GridView1_RowDataBound( object sender, GridViewRowEventArgs e ) { if (e.Row.RowType == DataControlRowType.DataRow) { DataRowView gv = (DataRowView)e.Row.DataItem; int itemSeleted = Int32.Parse(gv.Row["id"].ToString()) > 3 ? 0 : Int32.Parse(gv.Row["id"].ToString()); DropDownList dr = (DropDownList)e.Row.FindControl("dropdown"); dr.SelectedIndex = itemSeleted; } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"> <title>例子</title></head><body><form id="form1" runat="server"> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound"> <Columns> <asp:BoundField HeaderText="标题" DataField="text"/> </Columns> </asp:GridView> </form></body></html> 比较有用的是protected void GridView1_RowDataBound( object sender, GridViewRowEventArgs e )这个方法里面的东西,可以访问数据的其它字段,可以设置下拉的默认值等, comparevalidator的问题 安装了VS2008,后安装IIS的补救方法 如何在原地重画table? 这个是什么原因?我在自己电脑上测试不会出现问题,在别的电脑上就提示这个! 关于GRIDVIEW绑定XML的问题 SQL的问题: 谁有CSDN的BLOG里用来发表文章的那个文本编辑控件? 关于打开新窗口(浏览器)和关闭窗口的问题? 请教有关StoreProcedure问题! 怪事年年有,今年特别多:-( 求助:Gridview中 因为类别中绑定名称 点击 编辑按钮总出错:未将对象引用设置到对象的实例? VS.2005里在浏览器中查看的快捷键是???
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;public partial class Default2 : System.Web.UI.Page
{
public class GridViewTemplate : ITemplate
{
private DataControlRowType templateType;
private string columnName; public GridViewTemplate(DataControlRowType type, string colname)
{
templateType = type;
columnName = colname;
} public void InstantiateIn(System.Web.UI.Control container)
{
switch (templateType)
{
case DataControlRowType.Header:
Literal lc = new Literal();
lc.Text = "<B>新加的</B>";
container.Controls.Add(lc);
break;
case DataControlRowType.DataRow:
DropDownList drr = new DropDownList();
drr.Items.Add(new ListItem("AA", "a"));
drr.Items.Add(new ListItem("BB", "b"));
drr.Items.Add(new ListItem("CC", "c"));
//drr.DataBinding += new EventHandler(this.drr_DataBinding); container.Controls.Add(drr);
break;
default:
break;
}
} private void drr_DataBinding(Object sender, EventArgs e)
{ //也可以进行数据的绑定在这里执行
} } void Page_Load(Object sender, EventArgs e)
{ if (!IsPostBack)
{
TemplateField customField = new TemplateField();
customField.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "Title");
GridView1.Columns.Add(customField);
} }}
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server">
ICollection CreateDataSource()
{
DataTable dt = new DataTable();
DataRow dr;
dt.Columns.Add(new DataColumn("id", typeof(Int32)));
dt.Columns.Add(new DataColumn("text", typeof(string)));
for (int i = 0; i < 6; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "列表项目 " + i.ToString();
dt.Rows.Add(dr);
}
DataView dv = new DataView(dt);
return dv;
} public class GridViewTemplate : ITemplate
{
private DataControlRowType templateType;
private string columnName; public GridViewTemplate( DataControlRowType type, string colname )
{
templateType = type;
columnName = colname;
} public void InstantiateIn( System.Web.UI.Control container )
{
switch (templateType)
{
case DataControlRowType.Header:
Literal lc = new Literal();
lc.Text = columnName;
container.Controls.Add(lc);
break;
case DataControlRowType.DataRow:
DropDownList drr = new DropDownList();
drr.ID = "dropdown";
drr.AppendDataBoundItems = true;
drr.Items.Add(new ListItem("-----请选择------",""));
drr.Items.Add(new ListItem("AA", "a"));
drr.Items.Add(new ListItem("BB", "b"));
drr.Items.Add(new ListItem("CC", "c"));
container.Controls.Add(drr);
break;
default:
break;
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
TemplateField customField = new TemplateField();
customField.ShowHeader = true;
customField.HeaderTemplate = new GridViewTemplate(DataControlRowType.Header, "动态添加列");
customField.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "");
GridView1.Columns.Add(customField);
GridView1.DataSource = CreateDataSource();
GridView1.DataBind();
}
} protected void GridView1_RowDataBound( object sender, GridViewRowEventArgs e )
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
DataRowView gv = (DataRowView)e.Row.DataItem;
int itemSeleted = Int32.Parse(gv.Row["id"].ToString()) > 3 ? 0 : Int32.Parse(gv.Row["id"].ToString()); DropDownList dr = (DropDownList)e.Row.FindControl("dropdown");
dr.SelectedIndex = itemSeleted;
}
}
</script><html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>例子</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound">
<Columns>
<asp:BoundField HeaderText="标题" DataField="text"/>
</Columns>
</asp:GridView>
</form>
</body>
</html>
protected void GridView1_RowDataBound( object sender, GridViewRowEventArgs e )这个方法里面的东西,可以访问数据的其它字段,可以设置下拉的默认值等,