DataGrid同時具有分頁和排序功能及注意點

來源:互聯網
上載者:User
datagrid|分頁|排序 當DataGrid同時具有分頁和排序功能時應注意在重新綁定資料來源時,MyDataGrid.CurrentPageIndex=0;
下面給實現以上功能的原碼,也就不多綴了
aspx中包含有DataGrid和控制其資料來源變化的dropdownlist
DataGrid代碼
<asp:datagrid id="MyDataGrid" runat="server" BorderColor="#CCCCCC" Font-Size="100%" HorizontalAlign="Center"
AutoGenerateColumns="False" OnDeleteCommand="MyDataGrid_Delete" OnSortCommand="Sort_Grid" OnPageIndexChanged="MyDataGrid_PageIndexChanged"
DataKeyField="ACC_NO" PagerStyle-Position="Bottom" PagerStyle-HorizontalAlign="Center" PagerStyle-Mode="NextPrev"
PageSize="10" AllowSorting="True" AllowPaging="True" CellPadding="4" Width="100%">
<AlternatingItemStyle BackColor="#E9E9E6"></AlternatingItemStyle>
<HeaderStyle Font-Bold="True" Wrap="False" ForeColor="White" BackColor="#999999"></HeaderStyle>
<Columns>
<asp:ButtonColumn Text="口" CommandName="Delete"></asp:ButtonColumn>
<asp:BoundColumn DataField="NO" SortExpression="NO" ReadOnly="True" HeaderText="序號"></asp:BoundColumn>
<asp:BoundColumn DataField="ID" SortExpression="ID" HeaderText="ID"></asp:BoundColumn>
<asp:BoundColumn DataField="NAME" SortExpression="NAME" HeaderText="名稱"></asp:BoundColumn>
<asp:BoundColumn DataField="C_NAME" SortExpression="C_NAME" HeaderText="各科名稱"></asp:BoundColumn>
<asp:BoundColumn DataField="FLG" SortExpression="FLG" HeaderText="項目"></asp:BoundColumn>
</Columns>
<PagerStyle NextPageText="下10件" PrevPageText="返回" HorizontalAlign="Center"></PagerStyle>
</asp:datagrid>


dropdownlist代碼
<asp:dropdownlist id="ddlWk" Runat="server" AutoPostBack="True" Enabled="False">
<asp:ListItem Value="0">東京</asp:ListItem>
<asp:ListItem Value="3">九州</asp:ListItem>
<asp:ListItem Value="8">北海道</asp:ListItem>
<asp:ListItem Value="9">四國</asp:ListItem>
</asp:dropdownlist>



aspx.cs檔案代碼核心如下:
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
{
Session["WP"] ="0";
ddlWk_getS();
BindGrid();
}
}
private void ddlWk_getS()
{
switch (Session["WP"].ToString())
{
case "0":ddlWk.SelectedIndex=0;
break;
case "3":ddlWk.SelectedIndex=1;
break;
case "8":ddlWk.SelectedIndex=2;
break;
case "9":ddlWk.SelectedIndex=3;
break;
default:ddlWk.SelectedIndex=0;
break;
}
}
protected void BindGrid()
{
MyDataGrid.DataSource=GetData().Tables["vCO"].DefaultView;
MyDataGrid.DataBind();
//COUNT.Text=MyDataGrid.Columns.Count.ToString();
}

/// <summary>
/// 返回Data
/// </summary>
///<returns></returns>
private DataSet GetData()
{
string strConn=(String) ((NameValueCollection) Context.GetConfig("system.web/database"))["strConn"];
using (SqlConnection conn = new SqlConnection(strConn))
{
SqlCommand cmd = new SqlCommand("sp_C",conn);
cmd.CommandType=CommandType.StoredProcedure;
cmd.Parameters.Add("@place",SqlDbType.VarChar,2);
cmd.Parameters["@place"].Value=Session["WP"].ToString();
conn.Open();

SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand=cmd;
DataSet ds=new DataSet();
da.Fill(ds,"vCO");
Count.Text="ヒット:"+ds.Tables["vCO"].Rows.Count.ToString()+"件";
return ds;
}

}
/// <summary>
///從DataSet中除一
/// </summary>
/// <param name="sender"></param>
/// <param name="E"></param>
protected void MyDataGrid_Delete(Object sender, DataGridCommandEventArgs E)
{
String strID=MyDataGrid.DataKeys[(int)E.Item.ItemIndex].ToString();
//刪除操作
}
/// <summary>
/// 分頁操作
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void MyDataGrid_PageIndexChanged(object source, DataGridPageChangedEventArgs e)
{
MyDataGrid.CurrentPageIndex=e.NewPageIndex;
BindGrid();
}
/// <summary>
/// 排序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Sort_Grid(object sender, DataGridSortCommandEventArgs e)
{
DataView dv= new DataView(GetData().Tables["vCO"]);
dv.Sort= e.SortExpression.ToString();
MyDataGrid.DataSource=dv;
MyDataGrid.DataBind();
}

#region Web override protected void OnInit(EventArgs e)
{
// //
InitializeComponent();
base.OnInit(e);
}

/// <summary> /// </summary>
private void InitializeComponent()
{
this.ddlWk.SelectedIndexChanged += new System.EventHandler(this.ddlWk_SelectedIndexChanged);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

private void ddlWk_SelectedIndexChanged(object sender, System.EventArgs e)
{
Session["WP"]=ddlWk.SelectedValue;
MyDataGrid.CurrentPageIndex=0;//沒有這一句,當該頁碼超出其他資料來源的範圍時會出錯
BindGrid();
Response.Write( "<script language='javascript'>parent.menuframe.location.reload();</script>");

}





相關文章

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。