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VitrA Marin A44947 İkili Askı, Krom : Amazon.com.tr: Ev ve Yaşam https://www.amazon.com.tr/dp/B07D6XJ217 11 ay önce paylaşıldı

JACK & JONES Erkek boxer şort, 5'li paket : Amazon.com.tr: Moda https://www.amazon.com.tr/dp/B07G2MCQQK 4 ay önce paylaşıldı

MAKITA TD111DZ AKÜLÜ DARBELİ VİDALAMA : Amazon.com.tr: Yapı Market https://www.amazon.com.tr/dp/B01LREX6K8 4 sa. önce paylaşıldı

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Cevapla

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Mesaj

<%@ Page Language="C#" Debug="true" %>
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<script runat="server" language="c#">

protected void Page_Load()
{
SqlConnection Conn = new SqlConnection();
Conn.ConnectionString = "Integrated Security=SSPI;initial catalog=WebOn;data source=ZERGCOMP-BD43C7\\SQLEXPRESS";

SqlCommand Cmd = new SqlCommand("select * from Employe_Info",Conn);
Conn.Open();

SqlDataReader Dr = Cmd.ExecuteReader();
int work;

do
{

Response.Write(Dr.GetInt32(0));

} while (Convert.ToBoolean(Dr.Read()));

Dr.Close();
Conn.Close();
}

</script>

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Hata

Invalid attempt to read when no data is present.
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.InvalidOperationException: Invalid attempt to read when no data is present.

Source Error:

Line 19: {
Line 20:
Line 21: Response.Write(Dr.GetInt32(0));
Line 22:
Line 23:

Source File: c:\Inetpub\wwwroot\learn.netasp\employe_edd\Default.aspx Line: 21

Stack Trace:

[InvalidOperationException: Invalid attempt to read when no data is present.]
System.Data.SqlClient.SqlDataReader.ReadColumn(Int32 i, Boolean setTimeout) +874171
System.Data.SqlClient.SqlDataReader.GetInt32(Int32 i) +16
ASP.default_aspx.Page_Load() in c:\Inetpub\wwwroot\learn.netasp\employe_edd\Default.aspx:21
System.Web.Util.CalliHelper.ArglessFunctionCaller(IntPtr fp, Object o) +5
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +858603
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436

+++++++++++++++++++++++++++++++++++++++++++++++++++++

Sorun nerede tam olarak çözemedim,birde en alta yer alan hata msj'larının anlamları ne?