如何在网格视图中绑定数据网格中的下拉列表.... [英] How Do I Bind A Drop Down List In Data Grid Not In Gridview....
本文介绍了如何在网格视图中绑定数据网格中的下拉列表....的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这是我的代码 aspx 代码
here is my code aspx code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default4.aspx.cs" Inherits="Default4" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="datepicker/jquery.datepick.js" type="text/javascript"></script>
<link href="datepicker/jquery.datepick.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
$(function () {
$(".TextBox4").datepick({ dateFormat: 'mm/dd/yyyy', yearRange: 'any', showTrigger: '#calImg' });
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False"
oneditcommand="DataGrid1_EditCommand1"
oncancelcommand="DataGrid1_CancelCommand"
ondeletecommand="DataGrid1_DeleteCommand"
onupdatecommand="DataGrid1_UpdateCommand" DataKeyField="AdmissionNo"
ItemStyle-Width="25" GridLines="None" HorizontalAlign="Center"
Width="1024px" CellPadding="4" ForeColor="#333333"
onitemcommand="DataGrid1_ItemCommand">
<big> <<alternatingitemstyle backcolor="White />--%><br mode=" hold=" /> <AlternatingItemStyle BackColor=" white=" /><br mode=" admissionno="><br mode=" href="">abel1=" runat=" server=" Text='<%# Eval(" textbox5=" runat=" true=" Width=" 30px=" Font-Underline=" false="></asp:TextBox><br mode=" first="" name="><br mode=" label2=" runat=" f_name=") %>'></asp:Label><br mode=" textbox6=" runat=" last="" label4=" runat=" l_name=") %>'></asp:Label><br mode=" textbox8=" runat=" date="" of="" birth="><br mode=" label5=" runat=" dob=") %>'></asp:Label><br mode=" textbox4=" runat=" gender="><br mode=" label12=" runat=" radiobuttonlist1=" runat=" radiobuttonlist1_selectedindexchanged=" <br mode=" class="><br mode=" label6=" runat=" ddl1=" runat=" country="><br mode=" label8=" runat=" ddl2_cntry=" runat=" state="><br mode=" label9=" runat=" ddl3=" runat=" mobile="><br mode=" label10=" runat=" textbox2=" runat=" roll="" no="><br mode=" label11=" runat=" roll_no=") %>'></asp:Label><br mode=" textbox3=" runat=" images="><br mode=" image1=" runat=" 40px=" Width=" 47px=" <br mode=" img=") %>' /><br mode=" cancel=" EditText=" edit=" UpdateText=" update="><br mode=" delete=" HeaderText=" center=" VerticalAlign=" middle=" /><br mode=" 10px=" Height=" 5px=" BackColor=" textbox1=" runat=" data="" source="kaushik;database=ankit;" trusted_connection="yes;");<br" mode="hold" />
DataSet ds = new DataSet();
SqlDataAdapter ad = new SqlDataAdapter();
DataTable datat = new DataTable();
string s;
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
Bind();
}
}
public void Bind()
{
s = ("select * from record1");
ad = new SqlDataAdapter("select * from record1", con);
ad.Fill(ds);
//datat=ds.Tables["s"];
DataGrid1.DataSource = ds;
DataGrid1.DataBind();
}
protected void DataGrid1_EditCommand1(object source, DataGridCommandEventArgs e)
{
DataGrid1.EditItemIndex = e.Item.ItemIndex;
Bind();
}
protected void DataGrid1_CancelCommand(object source, DataGridCommandEventArgs e)
{
DataGrid1.EditItemIndex = -1;
Bind();
}
protected void DataGrid1_DeleteCommand(object source, DataGridCommandEventArgs e)
{
}
protected void DataGrid1_UpdateCommand(object source, DataGridCommandEventArgs e)
{
string t1;
TextBox box;
box = (TextBox)(e.Item.Cells[1].FindControl("FirstName"));
t1 = box.Text;
// var AdmissionNo= DataGrid1.DataKeys(e.)
}
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
}
protected void DataGrid1_ItemCommand(object source, DataGridCommandEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
con.Open();
DropDownList ddl2_cntry = (DropDownList)e.Item.FindControl("ddl2_cntry") as DropDownList;
DropDownList ddl = new DropDownList();
SqlCommand cmd = new SqlCommand("select * from country", con);
SqlDataAdapter sd = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
DataTable dt = new DataTable();
sd.Fill(dt);
if (dt.Rows.Count > 0)
{
con.Close();
ddl2_cntry.DataSource = dt;
ddl2_cntry.DataTextField = "countryName";
ddl2_cntry.DataValueField = "c_id";
ddl2_cntry.DataBind();
ddl2_cntry.Items.Insert(0, new ListItem("--select--", "0"));
}
}
}
OBJECT REFRENCE NOT SET TO AN INSTANCE OF AN OBJECT.
(ddl2_cntry.DataSource = dt;) FOUND IN DIS LINE....
推荐答案
（ function （）{
（ .TextBox4）。datepick（{dateFormat：' mm / dd / yyyy'， yearRange：' any'，showTrigger：' #calImg'}）;
}）;
< / script >
< / head >
< 正文 >
< 表单 id = form1 runat = server >
< div <跨度lass =code-keyword>>
< asp：DataGrid ID = DataGrid1 runat = server AutoGenerateColumns = 错误
oneditcommand=\"DataGrid1_EditCommand1\"
oncancelcommand=\"D ataGrid1_CancelCommand\"
ondeletecommand=\"DataGrid1_DeleteCommand\"
onupdatecommand=\"DataGrid1_UpdateCommand\" DataKeyField=\"AdmissionNo\"
ItemStyle-Width=\"25\" GridLines=\"None\" HorizontalAlign=\"Center\"
Width=\"1024px\" CellPadding=\"4\" ForeColor=\"#333333\"
onitemcommand=\"DataGrid1_ItemCommand\">
<big> <<alternatingitemstyle backcolor=\"White />--%><br mode=\" hold=\" /> <AlternatingItemStyle BackColor=\" white=\" /><br mode=\" admissionno=\"><br mode=\" href=\"\">abel1=\" runat=\" server=\" Text='<%# Eval(\" textbox5=\" runat=\" true=\" Width=\" 30px=\" Font-Underline=\" false=\"></asp:TextBox><br mode=\" first=\"\" name=\"><br mode=\" label2=\" runat=\" f_name=\") %>'></asp:Label><br mode=\" te xtbox6=\" runat=\" last=\"\" label4=\" runat=\" l_name=\") %>'></asp:Label><br mode=\" textbox8=\" runat=\" date=\"\" of=\"\" birth=\"><br mode=\" label5=\" runat=\" dob=\") %>'></asp:Label><br mode=\" textbox4=\" runat=\" gender=\"><br mode=\" label12=\" runat=\" radiobuttonlist1=\" runat=\" radiobuttonlist1_selectedindexchanged=\" <br mode=\" class=\"><br mode=\" label6=\" runat=\" ddl1=\" runat=\" country=\"><br mode=\" label8=\" runat=\" ddl2_cntry=\" runat=\" state=\"><br mode=\" label9=\" runat=\" ddl3=\" runat=\" mobile=\"><br mode=\" label10=\" runat=\" textbox2=\" runat=\" roll=\"\" no=\"><br mode=\" label11=\" runat=\" roll_no=\") %>'></asp:Label><br mode=\" textbox3=\" runat=\" images=\"><br mode=\" image1=\" runat=\" 40px=\" Width=\" 47px=\" <br mode=\" img=\") %>' /><br mode=\" cancel=\" EditText=\" edit=\" UpdateText=\" update=\"><br mode=\" delete=\" HeaderText=\" center=\" VerticalAlign=\" middle=\" /><br mode=\" 10px=\" Height=\" 5px=\" BackColor=\" textbox1=\" runat=\" data=\"\" source=\"kaushik;database=ankit;\" trusted_connection=\"yes;\");< ;br\" mode=\"hold\" />
(".TextBox4").datepick({ dateFormat: 'mm/dd/yyyy', yearRange: 'any', showTrigger: '#calImg' }); }); </script> </head> <body> <form id="form1" runat="server"> <div> <asp:DataGrid ID="DataGrid1" runat="server" AutoGenerateColumns="False" oneditcommand="DataGrid1_EditCommand1" oncancelcommand="DataGrid1_CancelCommand" ondeletecommand="DataGrid1_DeleteCommand" onupdatecommand="DataGrid1_UpdateCommand" DataKeyField="AdmissionNo" ItemStyle-Width="25" GridLines="None" HorizontalAlign="Center" Width="1024px" CellPadding="4" ForeColor="#333333" onitemcommand="DataGrid1_ItemCommand"> <big> <<alternatingitemstyle backcolor="White />--%><br mode=" hold=" /> <AlternatingItemStyle BackColor=" white=" /><br mode=" admissionno="><br mode=" href="">abel1=" runat=" server=" Text='<%# Eval(" textbox5=" runat=" true=" Width=" 30px=" Font-Underline=" false="></asp:TextBox><br mode=" first="" name="><br mode=" label2=" runat=" f_name=") %>'></asp:Label><br mode=" textbox6=" runat=" last="" label4=" runat=" l_name=") %>'></asp:Label><br mode=" textbox8=" runat=" date="" of="" birth="><br mode=" label5=" runat=" dob=") %>'></asp:Label><br mode=" textbox4=" runat=" gender="><br mode=" label12=" runat=" radiobuttonlist1=" runat=" radiobuttonlist1_selectedindexchanged=" <br mode=" class="><br mode=" label6=" runat=" ddl1=" runat=" country="><br mode=" label8=" runat=" ddl2_cntry=" runat=" state="><br mode=" label9=" runat=" ddl3=" runat=" mobile="><br mode=" label10=" runat=" textbox2=" runat=" roll="" no="><br mode=" label11=" runat=" roll_no=") %>'></asp:Label><br mode=" textbox3=" runat=" images="><br mode=" image1=" runat=" 40px=" Width=" 47px=" <br mode=" img=") %>' /><br mode=" cancel=" EditText=" edit=" UpdateText=" update="><br mode=" delete=" HeaderText=" center=" VerticalAlign=" middle=" /><br mode=" 10px=" Height=" 5px=" BackColor=" textbox1=" runat=" data="" source="kaushik;database=ankit;" trusted_connection="yes;");<br" mode="hold" />
DataSet ds = new DataSet();
SqlDataAdapter ad = new SqlDataAdapter();
DataTable datat = new DataTable();
string s;
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
Bind();
}
}
public void Bind()
{
s = ("select * from record1");
ad = new SqlDataAdapter("select * from record1", con);
ad.Fill(ds);
//datat=ds.Tables["s"];
DataGrid1.DataSource = ds;
DataGrid1.DataBind();
}
protected void DataGrid1_EditCommand1(object source, DataGridCommandEventArgs e)
{
DataGrid1.EditItemIndex = e.Item.ItemIndex;
Bind();
}
protected void DataGrid1_CancelCommand(object source, DataGridCommandEventArgs e)
{
DataGrid1.EditItemIndex = -1;
Bind();
}
protected void DataGrid1_DeleteCommand(object source, DataGridCommandEventArgs e)
{
}
protected void DataGrid1_UpdateCommand(object source, DataGridCommandEventArgs e)
{
string t1;
TextBox box;
box = (TextBox)(e.Item.Cells[1].FindControl("FirstName"));
t1 = box.Text;
// var AdmissionNo= DataGrid1.DataKeys(e.)
}
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
}
protected void DataGrid1_ItemCommand(object source, DataGridCommandEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
con.Open();
DropDownList ddl2_cntry = (DropDownList)e.Item.FindControl("ddl2_cntry") as DropDownList;
DropDownList ddl = new DropDownList();
SqlCommand cmd = new SqlCommand("select * from country", con);
SqlDataAdapter sd = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
DataTable dt = new DataTable();
sd.Fill(dt);
if (dt.Rows.Count > 0)
{
con.Close();
ddl2_cntry.DataSource = dt;
ddl2_cntry.DataTextField = "countryName";
ddl2_cntry.DataValueField = "c_id";
ddl2_cntry.DataBind();
ddl2_cntry.Items.Insert(0, new ListItem("--select--", "0"));
}
}
}
OBJECT REFRENCE NOT SET TO AN INSTANCE OF AN OBJECT.
(ddl2_cntry.DataSource = dt;) FOUND IN DIS LINE....When you have a control in a datagrid, if you want to bind it, you need to use the findControl method in the datagrid.ItemDataBound handler example:
When you have a control in a datagrid, if you want to bind it, you need to use the findControl method in the datagrid.ItemDataBound handler example:
protected void DataGrid1_DeleteCommand(object source, DataGridCommandEventArgs e)
{
DropDownList lst = (DropDownList) e.Item.findControl("ddl2_cntry");
lst.DataSource = x; //whatever datasource you need will be replaced by 'x'
lst.DataBind();
}
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