cs代码
protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                CheckUser();
            }
            DataBound();            //这一行放到IsPostBack中时全选可以,分页不可,放在此行的话全选不可,分页可以。
        }        private void DataBound()
        {
            SMReceiveBLL smreceivebll = new SMReceiveBLL();
            DataSet ds = smreceivebll.GetList("");
            dxGrid.DataSource = ds.Tables[0];
            dxGrid.DataBind();
        }        protected void selectAll_CheckedChanged(object sender, EventArgs e)
        {
            int startid = dxGrid.PageIndex * dxGrid.SettingsPager.PageSize;
            int endid;            if (dxGrid.PageIndex == dxGrid.PageCount - 1)
            {
                endid = dxGrid.VisibleRowCount;
            }
            else
            {
                endid = (dxGrid.PageIndex + 1) * dxGrid.SettingsPager.PageSize;
            }            CheckBox cbHead = (CheckBox)sender;
            if (cbHead.Checked == true)
            {
                CheckBox cb;
                for (int i = startid; i < endid; i++)
                {
                    cb = (CheckBox)dxGrid.FindRowCellTemplateControl(i, (GridViewDataColumn)dxGrid.Columns["cbxselectAll"], "cbxSelect");
                    cb.Checked = true;
                }
            }
            else
            {
                CheckBox cb;
                for (int i = startid; i < endid; i++)
                {
                    cb = (CheckBox)dxGrid.FindRowCellTemplateControl(i, (GridViewDataColumn)dxGrid.Columns["cbxselectAll"], "cbxSelect");
                    cb.Checked = false;
                }
            }
        }
前台代码
<dx:ASPxGridView ID="dxGrid" runat="server" AutoGenerateColumns="False" Width="100%" KeyFieldName="SMReceiveId">
        <Columns>
            <dx:GridViewDataTextColumn VisibleIndex="0">
                <DataItemTemplate>
                    <asp:CheckBox ID="cbxSelect" runat="server" Width="5%"/>
                    <asp:TextBox ID="txtSMSendId" runat="server" Text='<%# Eval("SMReceiveId") %>' Visible="false"></asp:TextBox>
                </DataItemTemplate>
                <HeaderTemplate>
                    <asp:CheckBox ID="cbxselectAll" runat="server" AutoPostBack="True" oncheckedchanged="selectAll_CheckedChanged" />
                </HeaderTemplate>
            </dx:GridViewDataTextColumn>
            <dx:GridViewDataTextColumn Caption="序号" VisibleIndex="0" Width="5%" >
            <DataItemTemplate>
                <%#Container.ItemIndex +1%>
            </DataItemTemplate>
            </dx:GridViewDataTextColumn>
            <dx:GridViewDataTextColumn caption="发送号码" FieldName="SendNum"  VisibleIndex="1" Width="10%"/>
            <dx:GridViewDataTextColumn caption="短信内容" FieldName="SMContent" VisibleIndex="3" Width="40%"/>
            <dx:GridViewDataTextColumn caption="接收时间" FieldName="SMReceiveTime"  VisibleIndex="4" Width="15%"/>
            <dx:GridViewDataTextColumn caption="接收状态" FieldName="SMReceiveStatus"  VisibleIndex="5" Width="15%"/>
            <dx:GridViewDataTextColumn caption="客户端接收时间" FieldName="ReadTime"  VisibleIndex="5" Width="15%"/>
        </Columns>
        <SettingsBehavior AllowFocusedRow="True" />
        <Settings ShowVerticalScrollBar="True" VerticalScrollableHeight="300" ShowHorizontalScrollBar="True" />
        <Styles>
        <AlternatingRow BackColor="#FFFFCC">
        </AlternatingRow>
            <FocusedRow BackColor="#3399FF">
        </FocusedRow>
        </Styles>
    </dx:ASPxGridView>
可有方法解决呢,似乎有冲突