新手请教问题 DataGrid 分页问题

[tw_ak47]

我查询功能都是对的 分页出点问题，点第2页后没数据，再点查询后第2页数据又出来了(第3页同理)！不知道怎么解决?
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient ;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Configuration;

namespace addcscs
{
/// <summary>
/// cxcs 的摘要说明。
/// </summary>
public class cxcs : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DropDownList DropDownList1;
protected System.Web.UI.WebControls.Button chaxun;
protected System.Web.UI.WebControls.TextBox mc;
protected System.Web.UI.WebControls.DataGrid DataGrid1;

private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
string strmc,strdlb;
//string conStr = ConfigurationSettings.AppSettings["connectionString"];
//strmc=mc.Text.ToString();
//strdlb=DropDownList1.SelectedItem.Value;



}

#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.mc.TextChanged += new System.EventHandler(this.mc_TextChanged);
this.chaxun.Click += new System.EventHandler(this.chaxun_Click);
this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
this.DataGrid1.SelectedIndexChanged += new System.EventHandler(this.DataGrid1_SelectedIndexChanged);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

private void mc_TextChanged(object sender, System.EventArgs e)
{

}

private void chaxun_Click(object sender, System.EventArgs e)
{
string conStr = ConfigurationSettings.AppSettings["connString"];
string strsql= "select * from Csmx where mc like '%"+mc.Text.ToString()+"%' AND dlb like '%"+DropDownList1.SelectedItem.Value+"%' ";
SqlConnection cxconn=new SqlConnection( conStr);
SqlDataAdapter cxAdapter = new SqlDataAdapter(strsql,cxconn);
cxconn.Open();
DataSet cxSet=new DataSet();
cxAdapter.Fill(cxSet,"Csmx");
DataGrid1.DataSource=cxSet;
DataGrid1.DataBind();

}



private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
this.DataGrid1.CurrentPageIndex=e.NewPageIndex;
DataGrid1.DataBind();
}

private void DataGrid1_SelectedIndexChanged(object sender, System.EventArgs e)
{

}


}
}

[icehawk]

点按钮一次就要重新从服务器请求页面的，这个时候DataSet都没了，当然没数据了

[xingyaohua]

在DataGrid1_PageIndexChanged里
this.DataGrid1.CurrentPageIndex=e.NewPageIndex;后
光DataGrid1.DataBind();不行的
得重新分配DataGrid1的数据源

[tw_ak47]

可以具体点吗?谢谢!!!

[Robert_Wang1983]

订阅DataBound事件，再里面调用
string conStr = ConfigurationSettings.AppSettings["connString"];
string strsql= "select * from Csmx where mc like '%"+mc.Text.ToString()+"%' AND dlb like '%"+DropDownList1.SelectedItem.Value+"%' ";
SqlConnection cxconn=new SqlConnection( conStr);
SqlDataAdapter cxAdapter = new SqlDataAdapter(strsql,cxconn);
cxconn.Open();
DataSet cxSet=new DataSet();
cxAdapter.Fill(cxSet,"Csmx");
DataGrid1.DataSource=cxSet;

[lekelaier_msn]

恩，楼上说的对，把你的 chaxun_Click 中的代码移到一个方法中，如
private void GetSqlData(）{....}，chaxun_Click中调用它，最后在DataGrid1_PageIndexChanged里把DataGrid1.DataBind();改为GetSqlData()就应该可以了

[tw_ak47]

我还是菜鸟!!!只有麻烦写清楚看看!!!

[tw_ak47]

我先试试看!

[lekelaier_msn]

private void chaxun_Click(object sender, System.EventArgs e)
{
GetSqlData();
}

private void GetSqlData(） //就是把原来chaxun_Click中的代码移进来
{
string conStr = ConfigurationSettings.AppSettings["connString"];
string strsql= "select * from Csmx where mc like '%"+mc.Text.ToString()+"%' AND dlb like '%"+DropDownList1.SelectedItem.Value+"%' ";
SqlConnection cxconn=new SqlConnection( conStr);
SqlDataAdapter cxAdapter = new SqlDataAdapter(strsql,cxconn);
cxconn.Open();
DataSet cxSet=new DataSet();
cxAdapter.Fill(cxSet,"Csmx");
DataGrid1.DataSource=cxSet;
DataGrid1.DataBind();
}

private void DataGrid1_PageIndexChanged(objectsource,System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
this.DataGrid1.CurrentPageIndex=e.NewPageIndex;
GetSqlData();
}

private void DataGrid1_SelectedIndexChanged(object sender, System.EventArgs e)
{

}


}

[tw_ak47]

呵!问题解决!今天多谢各位前辈帮忙了!

[liln]

换页后，重新绑定数据源

[jndxk]

mark

[lsfgis]

谢了