兩個dropdownlists drop1,drop2有單獨的選定索引已更改。在selectedindexchanged
上的任何下拉菜單都會轉到另一頁。如果我們在瀏覽器中使用後退按鈕,它會返回到我們的主頁,其中一個下拉將被選中位置。如果我們更改其他下拉菜單,則只能在編碼部分中更改的第一個選定索引頁面中的兩個下拉列表(衝突)
我們如何解決此問題?
代碼
protected void Page_Load(System.Object sender, System.EventArgs e)
{
try
{
if (!Page.IsPostBack)
{
string zCenterId="0";
if(Request.QueryString["LCID"]!=null)
{
zCenterId = Request.QueryString["LCID"].ToString();
}
ManageActivityAdminUIController ObjCtrl = new ManageActivityAdminUIController();
List<ManageActivityAdminUIInfo> ObjInfo = ObjCtrl.GetActivityList(zCenterId);
drplistactivity.DataSource = ObjInfo;
drplistactivity.DataBind();
drplistactivity.DataSource = ObjInfo;
drplistactivity.DataTextField = "ActivityName";
drplistactivity.DataValueField = "ID";
drplistactivity.DataBind();
drplistactivity.Items.Insert(0, new ListItem("<--Select Activity-->", "0"));
ManageCoursesController ObjCtrl = new ManageCoursesController();
List<ManageCoursesInfo> ObjInfo = ObjCtrl.GetCourses(zCenterId);
drplistcourse.DataSource = ObjInfo;
drplistcourse.DataTextField = "CourseName";
drplistcourse.DataValueField = "ID";
drplistcourse.DataBind();
drplistcourse.Items.Insert(0, new ListItem("<--Select Course-->", "0"));
}
}
catch (Exception exc) //Module failed to load
{
Exceptions.ProcessModuleLoadException(this, exc);
}
}
protected void drplistactivity_SelectedIndexChanged(object sender, EventArgs e)
{
string url = ResolveClientUrl("~/Activity.aspx?ActivityId="+drplistactivity.SelectedItem.Value);
Response.Redirect(url);
}
protected void drplistcourse_SelectedIndexChanged(object sender, EventArgs e)
{
string url = ResolveClientUrl("~/Course.aspx?CourseId=" + drplistcourse.SelectedItem.Value);
Response.Redirect(url);
}
你調試了嗎?究竟發生了什麼?被調用了錯誤的SelectIndexChanged? – magnattic 2012-03-20 08:43:20