DevExpress之ASPxGridView笔记（1）

1.设置Row（某列）输出格式，例如，在数字前加美元符、每3位以逗号隔开及设置小数点后两位：

<dx:GridViewDataTextColumn FieldName="SHOUHUIJEC" Caption="收汇金额" VisibleIndex="8" PropertiesTextEdit-DisplayFormatString="${0:#,##0.00;-#,##0.00;0}" Width="8%" />

2. ASPxGridView数据绑定中，KeyFieldName的值区分大小写，即一定要与数据库的键值大小写一致。

3.设置每页显示数目

<dx:ASPxGridView>
  <SettingsPager Position="Bottom" PageSize="10" Summary-Text="  第{0}/{1}页(共{2}条)" PageSizeItemSettings-Caption="每页大小：">
     <PageSizeItemSettings Visible="true" ShowAllItem="true" />
</SettingsPager>
</dx:ASPxGridView> 

4. DevExpress的主题设置：

方法1：

protected void Page_PreInit(object sender, EventArgs e){
//设置DevExpress的皮肤，可以写在aspx.cs或global.asax中
    DevExpress.Web.ASPxClasses.ASPxWebControl.GlobalTheme = "Office2010Blue";
}

方法2：直接在ASPxGridView中的Theme属性设置

5. DevExpress数据库绑定中字符串的写法

方法1：直接写连接字符串

方法2：

<asp:SqlDataSource ConnectionString="<%$ ConnectionStrings:MySql %>"/>
/*连接字符串在Web.config中*/

6.如果想设置排序时固定列宽，需要设置每一列的宽度

7.主从表，导出是否包含详细列表

<dx:ASPxCheckBox ID="chkSingleExpanded" runat="server" Text="只展开一项" AutoPostBack="true" OnCheckedChanged="chkSingleExpanded_CheckedChanged" />

protected void chkSingleExpanded_CheckedChanged(object sender, EventArgs e){
    grid.SettingsDetail.AllowOnlyOneMasterRowExpanded = chkSingleExpanded.Checked;
     if (grid.SettingsDetail.AllowOnlyOneMasterRowExpanded){
          grid.DetailRows.CollapseAllRows();
      }
}

8.显示列汇总

<dx:ASPxGridView>
    <dx:ASPxSummaryItem FieldName="NAME" SummaryType="Count" DisplayFormat="{0:汇 总}" />
</dx:ASPxGridView> 

9.无刷新操作

<asp:UpdatePanel ID="UpdatePanel" runat="server">
<ContentTemplate>
    /*********中间代码忽略**********/
    </ContentTemplate>
</asp:UpdatePanel>

10.取消ASPxGridView的Row排序

<ClientSideEvents ColumnSorting="function(s, e) {e.cancel = true; }" />

11.某行或某列颜色区分

//改变当前处理列的颜色
protected void ASPxGridView1_HtmlDataCellPrepared(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewTableDataCellEventArgs e)
 {
    if (e.DataColumn.FieldName == "LEFTMONEY")
    {
        if (float.Parse(e.CellValue.ToString()) < )
        {
            e.Cell.ForeColor = System.Drawing.Color.Red;
        }
    }
 }

//改变当前处理行的颜色
protected void ASPxGridView1_HtmlRowPrepared(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewTableRowEventArgs e)
{
    if (e.RowType != DevExpress.Web.ASPxGridView.GridViewRowType.Data) return;
    string ispick = e.GetValue("IsPromotion").ToString();
    if (ispick == "")
    {
        e.Row.ForeColor = System.Drawing.Color.Red;
    }
}

12.主从表，后台获取从表

ASPxGridView detailGrid = grid.FindDetailRowTemplateControl(index, "detailGrid") as ASPxGridView;

13.主从表，显示或隐藏从表某列

protected void detailGrid_Load(object sender, EventArgs e)
{
    (sender as ASPxGridView).Columns["HKDATE"].Visible = chkHidden.Checked;
}

14.在表中点击ASPxCheckBox就可以直接改变ASPxCheckBox的值及更新数据

<dx:GridViewDataCheckColumn FieldName="KPSH" Caption="开票" VisibleIndex="1" >
   <DataItemTemplate>
      <dx:ASPxCheckBox ID="chkKPSH" ClientInstanceName="chkKPSH" runat="server" Value='<%# Eval("KPSH") %>' OnInit="chk_Init" ReadOnly="True" CheckedImage-ToolTip="Checked" UncheckedImage-ToolTip="UnChecked" />
   </DataItemTemplate>
</d:GridViewDataCheckColumn>
<dx:GridViewDataCheckColumn FieldName="CWSH" Caption="审核" VisibleIndex="2" >
   <DataItemTemplate>
      <dx:ASPxCheckBox ID="chkCWSH" ClientInstanceName="chkCWSH" runat="server" Value='<%# Eval("CWSH") %>' OnInit="chk_Init" ReadOnly="True" CheckedImage-ToolTip="Checked" UncheckedImage-ToolTip="UnChecked" />
   </DataItemTemplate>
</dx:GridViewDataCheckColumn>
<dx:ASPxCallback ID="cb" runat="server" ClientInstanceName="cb" OnCallback="cb_Callback" />

protected void chk_Init(object sender, EventArgs e)
{
    ASPxCheckBox chk = sender as ASPxCheckBox;
    GridViewDataItemTemplateContainer container = chk.NamingContainer as GridViewDataItemTemplateContainer;
    string caoZuo = "锁定";
    if ((bool)grid.GetRowValues(container.VisibleIndex, container.Column.FieldName)) { caoZuo = "解锁"; }
    chk.ClientSideEvents.CheckedChanged = String.Format("function (s, e) {{ cb.PerformCallback(confirm('确定要 {0} 吗?')+'|{1}|{2}|' + s.GetChecked());grid.Refresh(); }}", caoZuo, container.Column.FieldName, container.KeyValue);
}
protected void cb_Callback(object source, DevExpress.Web.ASPxCallback.CallbackEventArgs e){
    String[] p = e.Parameter.Split('|');
    if (p[] != "true") return;
    DataBaseClass db = new DataBaseClass();
    if (p[] == "KPSH")
    {
        string sSql = "UPDATE table SET KPSH = @kpsh WHERE id = @id";
        SqlParameter[] pa = new SqlParameter[];
        pa[] = new SqlParameter("@kpsh", Convert.ToBoolean(p[]));
        pa[] = new SqlParameter("@id", Convert.ToInt32(p[]));
        db.ExeSql2(sSql, pa);
    }
    else
    {
        string sSql = "UPDATE table SET CWSH = @cwsh WHERE id = @id";
        SqlParameter[] pa = new SqlParameter[];
        pa[] = new SqlParameter("@cwsh", Convert.ToBoolean(p[]));
        pa[] = new SqlParameter("@id", Convert.ToInt32(p[]));
        db.ExeSql2(sSql, pa);
   }
}

15.主从表，如果希望主从表导出格式可以自行设置请使用XtraReport