Server Error in '/' Application.

There is no row at position 0.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IndexOutOfRangeException: There is no row at position 0.

Source Error:


Line 19:         DataTable dt = sqlhelper.reds("select * from news where newsid=" + newsid + "").Tables[0];
Line 20: 
Line 21:       Label5.Text= Label1.Text = dt.Rows[0]["newsname"].ToString();
Line 22:         Label2.Text = dt.Rows[0]["newsneirong"].ToString();
Line 23:         HyperLink1.Text = sqlhelper.onesql("select lxname from leixing where lxid=" + newslx + "");

Source File: d:\wwwroot\heiyu670\wwwroot\newsxx.aspx.cs    Line: 21

Stack Trace:


[IndexOutOfRangeException: There is no row at position 0.]
   System.Data.RBTree`1.GetNodeByIndex(Int32 userIndex) +2012635
   System.Data.DataRowCollection.get_Item(Int32 index) +21
   wenzhang.Page_Load(Object sender, EventArgs e) in d:\wwwroot\heiyu670\wwwroot\newsxx.aspx.cs:21
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1055.0