在Sqldatasource中使用所选项目

Question

如何在SqlDatasource中使用select方法的结果，例如将返回的ID分配给变量？

Answer 1

By default the SqlDataSource returns a System.Data.DataView object from its select method:

System.Web.UI.WebControls.SqlDataSource source = new System.Web.UI.WebControls.SqlDataSource("Connection String", "Select Query");
System.Data.DataView view = (System.Data.DataView)source.Select(System.Web.UI.DataSourceSelectArguments.Empty);

The System.Data.DataView object is a collection of System.Data.DataRowView so if you wanted to get the value of "pk" column for the first object you do this:

int itemIndex = 0;
String ColumnName = "pk";
int ID = view[itemIndex][ColumnName];