RadComboBox中的RadGrid分页

首先我们看下要实现的功能,就是在ComboBox选择实现选择Grid的行,而且这个grid要可以分页....

本来ComboBox 有一个自带的示例,就可以实现选择grid可是这里的grid不能分页.而且不是ajax的..

我们现在要实现它

这里有几个重要地方.

 

Code
<telerik:RadComboBox ID="RadComboBox_Initiator" runat="server" Width="210px" DropDownWidth="270px"
                    ShowToggleImage="True" Skin="Inox" >

<CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
                    <ItemTemplate>
                        <div id="div4">
                            <telerik:RadGrid runat="server" ID="RadGrid1" Skin="Inox" DataSourceID="SqlDataSource1"
                                AutoGenerateColumns="False" CssClass="InitiatorSelector" 
                                AllowMultiRowSelection="True" AllowPaging="True" GridLines="None" PageSize="5">
                                <MasterTableView ClientDataKeyNames="FirstName">
                                    <RowIndicatorColumn>
                                        <HeaderStyle Width="20px" />
                                    </RowIndicatorColumn>
                                    <ExpandCollapseColumn>
                                        <HeaderStyle Width="20px" />
                                    </ExpandCollapseColumn>
                                    <Columns>
                                        <telerik:GridBoundColumn DataField="LastName" HeaderText="Last&nbsp;Name&nbsp;&nbsp;">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn DataField="FirstName" HeaderText="First&nbsp;Name&nbsp;&nbsp;">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn DataField="HomePhone" HeaderText="Phone">
                                        </telerik:GridBoundColumn>
                                    </Columns>
                                </MasterTableView>
                                <ClientSettings EnableRowHoverStyle="true">
                                    <Selecting AllowRowSelect="True" />
                                    <ClientEvents OnRowSelected="onRowSelected" />
                                </ClientSettings>
                                <FilterMenu EnableTheming="True" Skin="Inox">
                                    <CollapseAnimation Duration="200" Type="OutQuint" />
                                </FilterMenu>
                            </telerik:RadGrid>
                        </div>
                        <asp:SqlDataSource runat="server" ID="SqlDataSource1" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
                            SelectCommand="SELECT [LastName], [FirstName], [HomePhone] FROM [Employees]"></asp:SqlDataSource>
                    </ItemTemplate>
                    <Items>
                        <telerik:RadComboBoxItem ></telerik:RadComboBoxItem>
                    </Items>
                </telerik:RadComboBox>

 

这里有个<ItemTemplate>模板.里面放的是grid,也就是模板项是grid

关键的是下面,RadComboBox不能绑定.需要我们手动添加一项.就是下面的代码

                <Items>
                        <telerik:RadComboBoxItem ></telerik:RadComboBoxItem>
                </Items>

grid需要开始可以选择行

                              <ClientSettings EnableRowHoverStyle="true">
                                    <Selecting AllowRowSelect="True" />
                                    <ClientEvents OnRowSelected="onRowSelected" />
                                </ClientSettings>

选择grid里面的行会执行一个js

 

 

Code
        function onRowSelected(sender, args) {
            var valueStringBuilder = [
                    args.getDataKeyValue("FirstName"),
                    " ",
                    args.getDataKeyValue("LastName"),
                    " (", args.getDataKeyValue("HomePhone"), ")"
                ];

            $find("RadComboBox_Initiator").set_text(valueStringBuilder.join(""));
            $find("RadComboBox_Initiator").hideDropDown();
        }

 

这个js函数会有2个参数,一个事件源,一个是参数

事件参数有个一个方法可以获取指定类的内容.当然是你选择的当前行中的某一列

然后用$find获取RadComboxBox再设置他的文本内容

然后在收起下来菜单.

这样当然可以选择grid的行.平且也可以得到正确结果.可是无法分页...而且点击分页菜单又会收起,这里我们为了让grid正常分页.而且必须是ajax就需要添加2个重要的东西.一个RadAjaxManager控件还有一个就是div 他的id是div3

 

Code
   <telerik:RadAjaxManager ID="AjaxManager1" runat="server" >
    <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="RadGrid1">
            <UpdatedControls  >
                <telerik:AjaxUpdatedControl ControlID="RadGrid1" />
            </UpdatedControls>
        </telerik:AjaxSetting>
    </AjaxSettings>
    </telerik:RadAjaxManager>

 

这里大家可以多看看api 这里就是设置一个ajax 请求. 如果是grid引发的回传那这个请求就是ajax的.而且ajax更新的是grid的内容

然后在添加一个js函数

 

        function StopPropagation(e) {
            if (!e) {
                e = window.event;
            }

            e.cancelBubble = true;
        } 

 

这个函数非常关键.如果没有这个函数那就无法实现正常分页和选择

最后在html代码的最后面添加这段js调用

                <script type="text/javascript">
                        var div4 = document.getElementById("div4");
                        div4.onclick = StopPropagation;
                </script>

这样完整的代码就完毕了.谢谢大家观看....如果有什么不对的地方请大家提出来,指点!!