ramin149
پنج شنبه 08 دی 1390, 13:10 عصر
من listbox را به روش زیر bind می کنم ولی خطا زیر را می دهد ؟
txt_domain.DataSource = dt;
txt_domain.DataTextField = "domain";
txt_domain.DataValueField = "iddomain";
txt_domain.DataBind();
خطا
'txt_domain' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value
txt_domain.DataSource = dt;
txt_domain.DataTextField = "domain";
txt_domain.DataValueField = "iddomain";
txt_domain.DataBind();
خطا
'txt_domain' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value