2015-04-03 46 views
0

我有一個複選框列表,從數據庫中獲取其數據。用戶將選擇/複選框並單擊刪除。刪除後,我正在重新綁定新數據,但這些更改未反映出來。該頁面仍顯示那些選中的複選框。儘管DB中的記錄被刪除。我錯過了什麼。CheckBoxList未更新 - ASP.Net

ASPX:

<asp:CheckBoxList ID="cblLanguages" runat="server" AppendDataBoundItems="true" 
      DataTextField="LanguageName" DataValueField="PKLanguageId" >    
</asp:CheckBoxList> 
<asp:Button ID="btnDelete" runat="server" OnClick="btnDelete_Click" Text="Delete" /> 

C#:

protected void Page_Load(object sender, EventArgs e) 
    { 
     if(!Page.IsPostBack) 
     { 
      BindData(); 
     } 
    } 

protected void btnDelete_Click(object sender, EventArgs e) 
    { 
     DeleteLanguages(); 
     BindData(); 
    } 

private void BindData() 
{ 
    DataSet dsData = LanguagesDB.GetLanguages(); 
    cblLanguages.DataSource = dsData.Tables[0]; 
    cblLanguages.DataBind();   
} 
private void DeleteLanguages() 
{ 
    //code to delete selected values 
} 

回答

3

每次加載的CheckBoxList清除的項目和加載。

private void BindData() 
{ 
    if(cblLanguages.Items.Count > 0) 
     cblLanguages.Items.Clear(); 
    DataSet dsData = LanguagesDB.GetLanguages(); 
    cblLanguages.DataSource = dsData.Tables[0]; 
    cblLanguages.DataBind();   
}