DEV-aspxgridview中无数据源时的操作

devexpress相关信息网站https://www.devexpress.com/Support/Center/Example/Details/E1522

该网址使用按钮添加删除编辑aspxgridview中的信息，并且有相关的演示：http://codecentral.devexpress.com/E1522/

上面的例子依然是在有数据库控件的基础上进行操作，但是与无数据库是操作的关联很大。

上面这张图片是演示删除操作

下面是代码 ：

前台代码：

 <dx:ASPxGridView ID="ASPxGridView1" runat="server" Width="100%" 
                        AutoGenerateColumns="False" ClientIDMode="AutoID" KeyFieldName="pk_notice" 
                        ClientInstanceName="grid"  
                     OnRowDeleting="grid_RowDeleting" >
                        <SettingsDetail ShowDetailRow="True" />

<SettingsBehavior AllowDragDrop="False" AllowSort="False" AllowFocusedRow="True" 
                            AllowSelectByRowClick="True" AllowSelectSingleRowOnly="True" 
                            ConfirmDelete="True"></SettingsBehavior>

<SettingsText EmptyDataRow="无相关记录！" ConfirmDelete="确定删除吗？"></SettingsText>

<SettingsDetail ShowDetailRow="True"></SettingsDetail>
                     <Columns>
                         <dx:GridViewCommandColumn VisibleIndex="0">
                             <DeleteButton Text="删除" Visible="True">
                             </DeleteButton>
                             <ClearFilterButton Visible="True">
                             </ClearFilterButton>
                         </dx:GridViewCommandColumn>
                        <dx:GridViewDataTextColumn Caption="pk_notice" FieldName="pk_notice" 
                            Visible="False" VisibleIndex="1"></dx:GridViewDataTextColumn>
                        <dx:GridViewDataTextColumn Caption="标题" FieldName="cTitle" VisibleIndex="2">
                        </dx:GridViewDataTextColumn>
                        <dx:GridViewDataTextColumn 
                            Caption="发布人" FieldName="cWriter" VisibleIndex="3">
                        </dx:GridViewDataTextColumn>
                        <dx:GridViewDataTextColumn 
                            Caption="发布时间" FieldName="dNewDate" VisibleIndex="4">
                        </dx:GridViewDataTextColumn>
                     </Columns>
                     <SettingsBehavior AllowDragDrop="False" AllowFocusedRow="True" 
                     AllowSort="False" ConfirmDelete="True"  AllowSelectSingleRowOnly="True" AllowSelectByRowClick="True"  />
                     <SettingsText EmptyDataRow="无相关记录！" ConfirmDelete="确定删除吗？" />
                    </dx:ASPxGridView>

后台代码：

protected void grid_RowDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e)
    {
        string txt = e.Keys[0].ToString();
        //DataRow found = table.Rows.Find(e.Keys[0]);
        string sqldel = "delete from EI_Notice where pk_notice='" + txt + "' ";
        getsqlcom(sqldel);
        string sql = "select top 100 pk_notice,cTitle ,cWriter,dNewDate,cDetails from EI_Notice order by dNewDate desc";
        ASPxGridView1.DataSource = getData(sql);
        ASPxGridView1.DataBind();
        e.Cancel = true;
    }

添加，编辑的按钮与此相似  事件为：

protected void grid_RowInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)；新增

 protected void grid_RowUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)；编辑

 其中：

        e.Cancel = true;是必须要有的，否则会弹出“不支持指定的方法！”
相关问题连接：
https://www.devexpress.com/Support/Center/Question/Details/Q421703

详细的问题可以留言讨论！