Telerik的RadComboBox丢失SelectedValue

我有一个Telerik的RadComboBox，当我尝试在数据库中插入时丢失了selectedValue。它在执行期间的所有时间都有值，但是当我点击保存按钮时，我看到RadComboBox只丢失了SelectedValue，它不会丢失文本而只是int值。我使用asp.net和c＃。Telerik的RadComboBox丢失SelectedValue

请帮我提出您的意见和建议。谢谢。

<!-- Definition of cbProg in page aspx--> 
<tr style="display: table-row;"> 
    <td style="display: table-cell; vertical-align: inherit"> 
    <div style="left: 210px; position: absolute; top: 140px;"> 
     <label for="cbProg">Programa:</label> 
     <div style="left: 65px; position: absolute; top: -10px;"> 
      <telerik:RadTextBox ID="txtProg" runat="server" Width="40px"  Height="25px" Enabled="true" MaxLength="2" 
       BorderColor="#C9D9F8" BorderStyle="Solid" Skin="Silk" ToolTip="Código del Programa al que se asigna el gasto." 
       BorderWidth="1px" ReadOnly="false"> 
      </telerik:RadTextBox> 
      <div style="left: 45px; position: absolute; top: 0px;"> 
       <telerik:RadComboBox ID="cbProg" runat="server" RenderMode="Lightweight" EnableLoadOnDemand="true" Filter="StartsWith" 
        OnSelectedIndexChanged="cbProg_SelectedIndexChanged" AutoPostBack="true" 
        EmptyMessage="-- Select --" HighlightTemplatedItems="true" Skin="Metro" Width="230px" ToolTip="Nombre del programa al que se asigna el gasto."> 
       </telerik:RadComboBox> 
       <div style="left: 195px; position: absolute; top: 5px;"> 
        <asp:RequiredFieldValidator ID="rfvPrograma" runat="server" ControlToValidate="cbProg" 
        ForeColor="Red" Font-Bold="true" SetFocusOnError="True" ValidationGroup="Guardar"></asp:RequiredFieldValidator> 
       </div> 
       <div style="left: 235px; position: absolute; top: 1px;"> 
        <asp:ImageButton ID="btPrograma" runat="server" Text="" OnClick="btPrograma_Click" 
         ImageUrl="../Imagenes/find1.png" Width="24px" Height="24px" ></asp:ImageButton> 
       </div> 
      </div> 
     </div> 
    </div> 
    </td> 
</tr> 

//Method for list all programs of table in cbProg 
public void ListarProgramas() 
{ 
    query = @"SELECT IdLinea, IdPrograma, Descripcion 
       FROM PRE_Programas"; 

    cbComun(cbProg, query, "Descripcion", "IdLinea"); 
} 

//Method for fill all comboBox 
public void cbComun(RadComboBox cb, string str, string Texto, string Valor, int a=1) 
{ 
    DataTable dt = dtSelec(str); 
    cb.Items.Clear(); 

    cb.DataTextField = Texto; 
    cb.DataValueField = Valor; 

    cb.DataSource = dt; 
    cb.DataBind(); 
} 

//Assigned Id Number of Program to other textbox filltering with SelectedValue of cbProg 
protected void cbProg_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e) 
{ 
    query = @"SELECT IdLinea, IdPrograma, Descripcion FROM PRE_Programas WHERE IdLinea='" + cbProg.SelectedValue + "' "; 

    txtComun(txtProg, query, "IdPrograma"); 
}

来源

2016-12-14 Edison Guzman

尝试在Page_Init事件中绑定RadComboBox。

来源

2016-12-14 15:29:53 TrevorBrooks

Telerik的RadComboBox丢失SelectedValue

回答

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