[英]multiple datasource to single dropdownlist
如何將多個數據源設置為單個dropdownlist?
DrpPosition.ClearSelection();
DrpPosition.DataSource = AdvertizeManager.GetList("", "", "", "");
DrpPosition.DataTextField = "PNAME";
DrpPosition.DataValueField = "ADID";
DrpPosition.DataBind();
DrpPosition.DataSource = CategoryManager.GetList("", "", "", "");
DrpPosition.DataTextField = "NAME";
DrpPosition.DataValueField = "CATID";
DrpPosition.DataBind();
您可以使用LINQ輕松解決此問題:
var advertizes = AdvertizeManager.GetList...
var categories = CategoryManager.GetList....
// create your annonymous type
var customAdvertizes = from advertize in advertizes
select new
{
Value = advertize.ADID,
Text = advertize.PNAME
};
var finalQuery = customAdvertizes.Concat(
from category in categories
select new
{
Value = category.CATID,
Text = category.NAME
}
);
然后將其綁定到您的DropDownList
DrpPosition.DataSource = finalQuery;
DrpPosition.DataTextField = "Text";
DrpPosition.DataValueField = "Value";
DrpPosition.DataBind();
這是不可能的,但是您可以在綁定之前合並數據源。
或者你可以使用
foreach(var item in yourDataSourceComplete)//yourDataSourceComplete = List1 + List2
{
.....
DrpPosition.Items.Add(Yourkey, YourValue);
}
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