C#相关Telerik组合框问题在第#页加载
我是C#noobie,我继承了一个大的C#项目,我必须做一些小的修改 首先让我通过代码:C#相关Telerik组合框问题在第#页加载,c#,telerik,selectedvalue,radcombobox,combobox,C#,Telerik,Selectedvalue,Radcombobox,Combobox,我是C#noobie,我继承了一个大的C#项目,我必须做一些小的修改 首先让我通过代码: protected void Page_Load(object sender, EventArgs e) { // Loading rcb1 this.dsX.SelectParameters["parameter1"].DefaultValue = XXX.XXX.ToString(); this.dsX.SelectParameters["parameter2"].Default
protected void Page_Load(object sender, EventArgs e)
{
// Loading rcb1
this.dsX.SelectParameters["parameter1"].DefaultValue = XXX.XXX.ToString();
this.dsX.SelectParameters["parameter2"].DefaultValue = this.XXX.ToString();
if ( !IsPostBack )
{
Control c = sender as Control;
RadComboBox rcb1 = c.Parent.FindControl("rcb1") as RadComboBox;
// Loading rcb2
this.dsY.SelectParameters["parameter1"].DefaultValue = XXX.XXX.ToString();
this.dsY.SelectParameters["parameter1"].DefaultValue = this.XXX.ToString();
// Value of first option from rcb1
this.dsY.SelectParameters["rcb1_value"].DefaultValue = rcb1.SelectedValue.ToString();
}
}
protected void rcb1_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e)
{
if (e.Value != "")
{
Control c = o as Control;
RadComboBox rcb1 = c.Parent.FindControl("rcb1") as RadComboBox;
RadComboBox rcb2 = c.Parent.FindControl("rcb2") as RadComboBox;
this.dsUsers.SelectParameters["parameter1"].DefaultValue = XXX.XXX.ToString();
this.dsUsers.SelectParameters["parameter2"].DefaultValue = this.XXX.ToString();
this.dsUsers.SelectParameters["parameter3"].DefaultValue = e.Value.ToString();
}
}
<tr>
<td align="left" height="22px">
LABEL
</td>
<td align="left" height="22px">
<telerik:RadComboBox ID="rcb1" runat="server" DataSourceID="dsX" DataTextField="PONotificationName"
DataValueField="ID" Skin="Vista" meta:resourcekey="xxResource1"
OnSelectedIndexChanged="rcb1_SelectedIndexChanged" AutoPostBack="true">
</telerik:RadComboBox>
<asp:SqlDataSource ID="dsX" runat="server" ConnectionString="<%$ connectionStrings:XXX %>"
SelectCommand="XXX" SelectCommandType="StoredProcedure">
<SelectParameters>
<asp:Parameter Name="parameter1" Type="Int32" />
<asp:Parameter Name="parameter2" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</td>
</tr>
<tr>
<td align="left" height="22px">
LABEL 2
</td>
<td align="left" height="22px">
<telerik:RadComboBox ID="rcb2" runat="server" DataSourceID="dsY" DataTextField="Name"
DataValueField="ID" Skin="Vista" meta:resourcekey="xxResource2">
</telerik:RadComboBox>
<asp:SqlDataSource ID="dsY" runat="server" ConnectionString="<%$ connectionStrings:XXX %>"
SelectCommand="XXX2" SelectCommandType="StoredProcedure">
<SelectParameters>
<asp:Parameter Name="parameter1" Type="Int32" />
<asp:Parameter Name="parameter2" Type="Int32" />
<asp:Parameter Name="parameter3" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</td>
</tr>
受保护的无效页面加载(对象发送方,事件参数e)
{
//加载rcb1
this.dsX.SelectParameters[“parameter1”]。DefaultValue=XXX.XXX.ToString();
this.dsX.SelectParameters[“parameter2”].DefaultValue=this.XXX.ToString();
如果(!IsPostBack)
{
控件c=发送方作为控件;
RadComboBox rcb1=c.Parent.FindControl(“rcb1”)作为RadComboBox;
//加载rcb2
this.dsY.SelectParameters[“parameter1”]。DefaultValue=XXX.XXX.ToString();
this.dsY.SelectParameters[“parameter1”].DefaultValue=this.XXX.ToString();
//rcb1中第一个选项的值
this.dsY.SelectParameters[“rcb1_value”].DefaultValue=rcb1.SelectedValue.ToString();
}
}
受保护的无效rcb1\u SelectedIndexChanged(对象o,RadComboxSelectedIndexChangedEventArgs e)
{
如果(例如,值!=“”)
{
对照组c=o为对照组;
RadComboBox rcb1=c.Parent.FindControl(“rcb1”)作为RadComboBox;
RadComboBox rcb2=c.Parent.FindControl(“rcb2”)作为RadComboBox;
this.dsUsers.SelectParameters[“parameter1”]。DefaultValue=XXX.XXX.ToString();
this.dsUsers.SelectParameters[“parameter2”]。DefaultValue=this.XXX.ToString();
this.dsUsers.SelectParameters[“parameter3”]。DefaultValue=e.Value.ToString();
}
}
标签
标签2
我的问题是那些组合框。
代码工作正常,但问题是在用户执行任何操作之前,第二个组合框(rcb2)保持空白
我必须使用存储过程从第一个组合框(rcb1)加载第二个组合框(rcb2)的数据
我已经试过了。选择值。项[index]。值和其他值返回null
也许问题是第一个组合框没有所选项目的定义
谁能帮我解决这个问题
我可以在顶部的rcb1中添加新的空白项。但我也有问题 解决了我的空消息问题。。。天哪,我花了一整天
<telerik:RadComboBox ID="rcb1" runat="server" DataSourceID="dsX" DataTextField="PONotificationName"
DataValueField="ID" Skin="Vista" meta:resourcekey="xxResource1"
OnSelectedIndexChanged="rcb1_SelectedIndexChanged" AutoPostBack="true" emptymessage="Select Value...">
</telerik:RadComboBox>