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  #1 (permalink)  
Old November 15th, 2005, 08:24 PM
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Default fail login sql database...

OS : windows server 2003
DB : SQL server 2000

Would you help me?

case1

    string conn = "server=localhost; database=Dotnet; uid=sa; pwd=;";
    SqlConnection connection = new SqlConnection(conn);
    connection.Open();

This case1 is occurred Exception(System.InvalidCastException)

[InvalidCastException: ÁöÁ¤ÇÑ Ä³½ºÆ®°¡ À߸øµÇ¾ú½À´Ï´Ù.]
   ASP.control_test_aspx.Setmyname(Object src, EventArgs e) +133
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
   System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument) +57
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +18
   System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +33
   System.Web.UI.Page.ProcessRequestMain() +1277



case2

    string conn = "server=localhost; database=Northwind; uid=sa; pwd=;";
    SqlConnection connection = new SqlConnection(conn);
    connection.Open();

This case2 is not occurred Exception. Login success.

Q1. I don't understand above state. Why case1 have CastExeption?

case3

    string conn = "server=localhost; database=Northwind; uid=Administrator; pwd=star_3327;";
    SqlConnection connection = new SqlConnection(conn);
    connection.Open();

This case3 can't login sql server(System.Data.SqlClient.SqlException).

[SqlException: 'Administrator' »ç¿ëÀÚ°¡ ·Î±×ÀÎÇÏÁö ¸øÇß½À´Ï´Ù.]
   System.Data.SqlClient.ConnectionPool.GetConnection (Boolean& isInTransaction) +472
   System.Data.SqlClient.SqlConnectionPoolManager.Get PooledConnection(SqlConnectionString options, Boolean& isInTransaction) +372
   System.Data.SqlClient.SqlConnection.Open() +384
   ASP.control_test_aspx.Setmyname(Object src, EventArgs e) +72
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
   System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument) +57
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +18
   System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +33
   System.Web.UI.Page.ProcessRequestMain() +1277

Q2. Why case3 can't login?



  #2 (permalink)  
Old November 17th, 2005, 11:18 AM
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Default

I think there is a SQL Server Internal error. Just see,case 1 and case 2 is custom created but case 2 is automatically created when u installed SQL Server.
I have kept ur query in mind and give u reply as soon as possible. But I think it is internal error. Check the same think in wizard basis that ships in VS.NET and check the "TEST CONNECTION".

Subhendu De
Software Developer
New Delhi

Subhendu De
  #3 (permalink)  
Old November 22nd, 2005, 08:20 PM
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Default

when we use ASP in same state, we success login.

This is ASP source code

DbConn.asp
<%
Function DbOpen(objCon)
    set objCon = server.createObject("ADODB.Connection")
    objCon.Open "Provider=SQLOLEDB.1;Password=sa_3327;Persist Security Info=True;User ID=sa;Initial Catalog=Dotnet;Data Source=star"
End Function

Function DbClose(objCon)
    objCon.close
    set objCon = nothing
End Function
%>


test.asp

<%
name=request("name")
address=request("name")
telephone=request("telephone")
if name <> "" then
    Call DbOpen(Conn)
    Conn.BeginTrans
    ON ERROR RESUME NEXT

    sqlstr="insert into test_info (name,address,telephone) values "
    sqlstr=sqlstr&"('"&name&"','"&address&"','"&teleph one&"')"
    Conn.Execute(sqlstr)
    Error_cnt=Error_cnt+Conn.Errors.Count

    if Error_cnt = 0 then
        Conn.CommitTrans
        Response.write "<script language=JavaScript>alert('µî·ÏµÇ¾ú½À´ ´Ù.');</script>"
    Else
        Conn.RollbackTrans
        Response.write "<script language=JavaScript>alert('\n Database ¿¡·¯!!');history.back();</script>"
    End If

    Call DBClose(Conn)
end if
%>
<html>
<body>
<form name="theForm" action="test.asp" method="post">
<table>
<tr>
    <td>À̸§</td>
    <td><input type="text" size="10" name="name" value=""></td>
</tr>
<tr>
    <td>ÁÖ¼Ò</td>
    <td><input type="text" size="50" name="address" value=""></td>
</tr>
<tr>
    <td>¿¬¶ôó</td>
    <td><input type="text" size="20" name="telephone" value=""></td>
</tr>
<tr>
    <td colspan=2 align=center><input type="submit" size="20" name="btn" value="µî·Ï"></td>
</tr>
</table>
</form>
</body>
</html>

 


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