我在按钮单击时显示了gridview上的所有数据，并且我在gridview中启用填充在网格视图上显示，但是当我单击网格填充(如12345)时，则在网格视图上不显示值之后... [英] i show all data on gridview on the button click and i enable padding in gridview data is show on grid view but when i click on grid pading (like 12345) then after value is not show on grid view...
本文介绍了我在按钮单击时显示了gridview上的所有数据，并且我在gridview中启用填充在网格视图上显示，但是当我单击网格填充(如12345)时，则在网格视图上不显示值之后...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
单击按钮后我会在网格视图上显示所有数据，并在网格视图中启用填充，但数据会在网格视图上显示，但是当我单击网格填充(如12345)时，则在网格视图上不显示值.
我现在该怎么办?
我使用这些代码:
I show all data on grid view on the button click and I enable padding in grid view data is show on grid view but when i click on grid padding (like 12345) then after value is not show on grid view.
What should i do now?
I use these code :
<div>
<table class="style1">
<tr><td class="style4" width="156px">Find a Class</td>
<td align="center" class="style5">
<asp:DropDownList ID="DropDownList2" runat="server">
<asp:ListItem>Select Class</asp:ListItem>
<asp:ListItem>Language Class English</asp:ListItem>
<asp:ListItem>Music Class</asp:ListItem>
<asp:ListItem>Baby Sitters</asp:ListItem>
<asp:ListItem>Skating Classes</asp:ListItem>
<asp:ListItem>Yoga Class</asp:ListItem>
<asp:ListItem>Swimming Class</asp:ListItem>
<asp:ListItem>Chess Class</asp:ListItem>
<asp:ListItem>Self Defence Classes</asp:ListItem>
<asp:ListItem>Tennis Classes</asp:ListItem>
<asp:ListItem>Personality Development For Children</asp:ListItem>
<asp:ListItem>Martial Art Training Centres</asp:ListItem>
<asp:ListItem>Karate Classes</asp:ListItem>
<asp:ListItem>Cricket Coaching Classes</asp:ListItem>
<asp:ListItem>Schools</asp:ListItem>
<asp:ListItem>Computer Training Institutes</asp:ListItem>
<asp:ListItem>Aerobic Classes</asp:ListItem>
<asp:ListItem>Badminton Court</asp:ListItem>
<asp:ListItem>Kick Boxing Classes</asp:ListItem>
<asp:ListItem>Abacus Classes</asp:ListItem>
<asp:ListItem>Kindergartens</asp:ListItem>
<asp:ListItem>Hobby Classes</asp:ListItem>
<asp:ListItem>Kung FU Classes</asp:ListItem>
<asp:ListItem>Taekwondo Class</asp:ListItem>
<asp:ListItem>Summer Camps</asp:ListItem>
<asp:ListItem>Dance Classes</asp:ListItem>
</asp:DropDownList>
</td><td align="center" width="100px">
<asp:DropDownList ID="DropDownList3" runat="server"
>
<asp:ListItem>Noida</asp:ListItem>
<asp:ListItem>Indirapuram</asp:ListItem>
<asp:ListItem>Vaishali</asp:ListItem>
<asp:ListItem>Vasundhara</asp:ListItem>
<asp:ListItem>Sahibabad</asp:ListItem>
<asp:ListItem>Kaushambi</asp:ListItem>
</asp:DropDownList>
</td>
<td align="center" class="style2" width="100px">
<asp:Button ID="Button1" runat="server" Text="GO" onclick="Button1_Click"
Height="31px" Width="71px" BackColor="#B9B9B9" BorderStyle="None" />
</td>
</tr>
<tr><td class="style4" colspan="4">
</td>
</tr>
<tr>
<%--<asp:Panel ID="Panel2" runat="server" Visible="False">
<td class="style4">
<asp:Label ID="Label1" runat="server" Text="InSector"></asp:Label>
</td>
<td>
</td>
<td>
</td>
</asp:Panel>--%>
</tr>
</table>
</div>
<asp:GridView ID="GridView1" runat="server" Width="614px" AllowPaging="True"
onpageindexchanging="GridView1_PageIndexChanging1">
</asp:GridView>
这是C#代码:
This is c# code :
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
SqlConnection con;
SqlCommand cmd;
DataSet ds;
string connection;
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("Data Source=RESTON-PC;Initial Catalog=Easy2Connect;Integrated Security=True");
con.Open();
string ret = "select * from SearchData where ClassName = '" + DropDownList2.SelectedItem + "'and City = '" + DropDownList3.SelectedItem + "'";
cmd = new SqlCommand(ret, con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
con.Close();
}
protected void GridView1_PageIndexChanging1(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
GridView1.DataBind();
}
}
请帮助我.
Please help me.
推荐答案
protected void GridView1_PageIndexChanging1(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
GridView1.DataSource = ds //<-- This line is missing. There is no datasource being set on Page changing event.
GridView1.DataBind();
}
您可以将数据源保存在变量中，这样就不必重复代码即可重新填充数据源:
You can hold the data source in a variable so that you don''t have to duplicate code to re populate the data source:
private DataSet GridView1DataSource
{
get
{
if(Session["gridview1datasource"] == null)
{
Session["gridview1datasource"] = new DataSet;
}
return (DataSet)Session["gridview1datasource"];
}
set
{
Session["gridview1datasource"] = value;
}
}
然后将Button1_Click更改如下:
Then change the Button1_Click to be as follows:
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("Data Source=RESTON-PC;Initial Catalog=Easy2Connect;Integrated Security=True");
con.Open();
string ret = "select * from SearchData where ClassName = ''" + DropDownList2.SelectedItem + "''and City = ''" + DropDownList3.SelectedItem + "''";
cmd = new SqlCommand(ret, con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
//DataSet ds = new DataSet(); <-- Don''t need this line now as the DS is created by the GridView1DataSource property.
da.Fill(GridView1DataSource); //<-- change this to use the session variable.
GridView1.DataSource = ds;
GridView1.DataBind();
con.Close();
}
一切顺利.
All the best.
这篇关于我在按钮单击时显示了gridview上的所有数据，并且我在gridview中启用填充在网格视图上显示，但是当我单击网格填充(如12345)时，则在网格视图上不显示值之后...的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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