Unable To Cast COM Object Of Type 'ADODB.CommandClass' To Interface Type 'ADODB._Command'
Dec 20, 2006
I have an application which runs successfully on a couple of my customer's machines but fails on a third. It seems to fail when opening the database:
Unable to cast COM object of type 'ADODB.CommandClass' to interface type 'ADODB._Command'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{B08400BD-F9D1-4D02-B856-71D5DBA123E9}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=false; Initial Catalog=lensdb;Data Source = SQL
Before I got this error I was getting another problem (sorry didn't make a copy of that error's text) that made me think that adodb.dll simply wasn't loaded/registered. I got rid of that error by copying my adodb.dll onto the third machine and running gacutil /i. There is now an entry in winntassemblies for adodb.
Just in case you think it could be an obvious registry problem: when I started getting the current error I thought that maybe the registry needed updating and I merged the following lines into onto the target machine (from my dev machine):
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}]
@="_Command"
[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid]
@="{00020424-0000-0000-C000-000000000046}"
[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid32]
@="{00020424-0000-0000-C000-000000000046}"
[HKEY_CLASSES_ROOTInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}TypeLib]
@="{EF53050B-882E-4776-B643-EDA472E8E3F2}"
"Version"="2.7"
[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}]
@="_Command"
[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid]
@="{00020424-0000-0000-C000-000000000046}"
[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}ProxyStubClsid32]
@="{00020424-0000-0000-C000-000000000046}"
[HKEY_LOCAL_MACHINESOFTWAREClassesInterface{B08400BD-F9D1-4D02-B856-71D5DBA123E9}TypeLib]
@="{EF53050B-882E-4776-B643-EDA472E8E3F2}"
"Version"="2.7"
but, no change alas.
All three machines are running Windows 2000.
Any advice would be appreciated.
Thanks in advance,
Ross
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Nov 26, 2007
hi have written SSIS script and i am using script component to Row count below my code what i have written. and i am getting error below i have mention...after code see the error
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using System.Data.SqlClient;
using System.Data.OleDb;
[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
IDTSConnectionManager100 connMgr;
OleDbConnection sqlConn = null;
OleDbDataReader sqlReader;
public override void AcquireConnections(object Transaction)
{
connMgr = this.Connections.MyConnection;
sqlConn = (OleDbConnection )connMgr.AcquireConnection(null);
//sqlConn = (SqlConnection)connMgr.AcquireConnection(null);
}
public override void PreExecute()
{
base.PreExecute();
/*
Add your code here for preprocessing or remove if not needed
*/
OleDbCommand cmd = new OleDbCommand("SELECT CustomerID,TerritoryID,AccountNumber,CustomerType FROM Sales.Customer", sqlConn);
sqlReader = cmd.ExecuteReader();
}
public override void PostExecute()
{
base.PostExecute();
/*
Add your code here for postprocessing or remove if not needed
You can set read/write variables here, for example:
Variables.MyIntVar = 100
*/
}
public override void CreateNewOutputRows()
{
/*
Add rows by calling the AddRow method on the member variable named "<Output Name>Buffer".
For example, call MyOutputBuffer.AddRow() if your output was named "MyOutput".
*/
System.Data.OleDb.OleDbDataAdapter oLead = new System.Data.OleDb.OleDbDataAdapter();
//SqlDataAdapter oLead = new SqlDataAdapter();
DataSet ds = new DataSet();
System.Data.DataTable dt = new System.Data.DataTable();
//DataRow row = new DataRow();
oLead.Fill(dt,this.Variables.ObjVariable);
foreach (DataRow row in dt.Rows)
{
{
Output0Buffer.AddRow();
Output0Buffer.CustomerID = (int)row["CustomerID"];
Output0Buffer.TerritoryID =(int)row["TerritoryID"];
Output0Buffer.AccountNumber = row["AccountNumber"].ToString();
Output0Buffer.CustomerType = row["CustomerType"].ToString();
}
}
}
}
the error
Script component has encountered an exception in user code
Object is not an ADODB.RecordSet or an ADODB.Record.
Parameter name: adodb
at System.Data.OleDb.OleDbDataAdapter.FillFromADODB(Object data, Object adodb, String
srcTable, Boolean multipleResults)
at System.Data.OleDb.OleDbDataAdapter.Fill(DataTable dataTable, Object ADODBRecordSet)
at ScriptMain.CreateNewOutputRows()
at UserComponent.PrimeOutput(Int32 Outputs, Int32[] OutputIDs, PipelineBuffer[] Buffers)
at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.PrimeOutput(Int32 outputs,
Int32[] outputIDs, PipelineBuffer[] buffers)
thanks
kedarnath
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Nov 27, 2007
hi i dont know how to do type casting.
this.Variables.ObjVariable this objVariables i have create in variable place below like this
Name:Variable datatype int32 values 0
Name: NumberofRowsdatatype int32 values 10000
Name: ObjVariable datatype Object
My code
public override void CreateNewOutputRows()
{
/*
Add rows by calling the AddRow method on the member variable named "<Output Name>Buffer".
For example, call MyOutputBuffer.AddRow() if your output was named "MyOutput".
*/
System.Data.OleDb.OleDbDataAdapter oLead = new System.Data.OleDb.OleDbDataAdapter();
//System.Data.Odbc.OdbcDataAdapter oLead = new System.Data.Odbc.OdbcDataAdapter();
//SqlDataAdapter oLead = new SqlDataAdapter();
System.Data.DataTable dt = new System.Data.DataTable();
DataSet ds = (DataSet)this.Variables.ObjVariable; // here i am getting error
ds.Tables.Add(dt);
ADODB.Record rs = new ADODB.Record();
oLead.Fill(ds, rs, "Variables");
foreach (DataRow row in dt.Rows)
{
{
Output0Buffer.AddRow();
Output0Buffer.Column = (int)row["Column"];
Output0Buffer.Column1 = row["Column1"].ToString();
Output0Buffer.Column2 = row["Column2"].ToString();
}
}
}
}
This is the error
Unable to cast object of type 'System.Object' to type 'System.Data.DataSet'.
at ScriptMain.CreateNewOutputRows()
at UserComponent.PrimeOutput(Int32 Outputs, Int32[] OutputIDs, PipelineBuffer[] Buffers)
at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.PrimeOutput(Int32 outputs, Int32[] outputIDs, PipelineBuffer[] buffers)
thanks
kedaranth
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Oct 19, 2006
I am trying to put the data from a field in my database into a row in a table using the SQLDataSource.Select statement. I am using the following code: FileBase.SelectCommand = "SELECT Username FROM Files WHERE Filename = '" & myFileInfo.FullName & "'" myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments()), String)But when I run the code, I get the following error:Server Error in '/YorZap' Application. Unable to cast object of type 'System.Data.DataView' to type 'System.String'. 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.InvalidCastException: Unable to cast object of type 'System.Data.DataView' to type 'System.String'.Source Error: Line 54: FileBase.SelectCommand = "SELECT Username FROM Files WHERE Filename = '" & myFileInfo.FullName & "'"
Line 55: 'myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments).GetEnumerator.Current, String)
Line 56: myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments()), String)
Line 57:
Line 58: filesTable.Rows.Add(myDataRow)Source File: D:YorZapdir_list_sort.aspx Line: 56 Stack Trace: [InvalidCastException: Unable to cast object of type 'System.Data.DataView' to type 'System.String'.]
ASP.dir_list_sort_aspx.BindFileDataToGrid(String strSortField) in D:YorZapdir_list_sort.aspx:56
ASP.dir_list_sort_aspx.Page_Load(Object sender, EventArgs e) in D:YorZapdir_list_sort.aspx:7
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +13
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +45
System.Web.UI.Control.OnLoad(EventArgs e) +80
System.Web.UI.Control.LoadRecursive() +49
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3743
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210 Please help me!
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May 17, 2006
Dear all,
I am stuck with a SSIS package and I can€™t work out. Let me know what steps are the correct in order to solve this.
At first I have just a Flat File Source and then Script Component, nothing else.
Error:
[Script Component [516]] Error: System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to class type 'System.Data.SqlClient.SqlConnection'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface. at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.HandleUserException(Exception e) at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.AcquireConnections(Object transaction) at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostAcquireConnections(IDTSManagedComponentWrapper90 wrapper, Object transaction)
Script Code (from Script Component):
' Microsoft SQL Server Integration Services user script component
' This is your new script component in Microsoft Visual Basic .NET
' ScriptMain is the entrypoint class for script components
Imports System
Imports System.Data.SqlClient
Imports System.Math
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Public Class ScriptMain
Inherits UserComponent
Dim nDTS As IDTSConnectionManager90
Dim sqlConnecta As SqlConnection
Dim sqlComm As SqlCommand
Dim sqlParam As SqlParameter
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Dim valorColumna As String
Dim valorColumna10 As Double
valorColumna = Row.Column9.Substring(1, 1)
If valorColumna = "N" Then
valorColumna10 = -1 * CDbl(Row.Column10 / 100)
Else
valorColumna10 = CDbl(Row.Column10 / 100)
End If
Me.Output0Buffer.PORCRETEN = CDbl(Row.Column11 / 100)
Me.Output0Buffer.IMPRETEN = CDbl(Row.Column12 / 100)
Me.Output0Buffer.EJERCICIO = CInt(Row.Column2)
Me.Output0Buffer.CODPROV = CInt(Row.Column7)
Me.Output0Buffer.MODALIDAD = CInt(Row.Column8)
Me.Output0Buffer.NIFPERC = CStr(Row.Column3)
Me.Output0Buffer.NIFREP = CStr(Row.Column4)
Me.Output0Buffer.NOMBRE = CStr(Row.Column6)
Me.Output0Buffer.EJERDEV = CDbl(Row.Column13)
With sqlComm
.Parameters("@Ejercicio").Value = CInt(Row.Column2)
.Parameters("@NIFPerc").Value = CStr(Row.Column3)
.Parameters("@NIFReP").Value = CStr(Row.Column4)
.Parameters("@Nombre").Value = CStr(Row.Column6)
.Parameters("@CodProv").Value = CInt(Row.Column7)
.Parameters("@Modalidad").Value = CInt(Row.Column8)
.Parameters("@ImpBase").Value = valorColumna10
.Parameters("@PorcReten").Value = CDbl(Row.Column11 / 100)
.Parameters("@ImpReten").Value = CDbl(Row.Column12 / 100)
.Parameters("@EjerDev").Value = CDbl(Row.Column13)
.ExecuteNonQuery()
End With
End Sub
Public Overrides Sub AcquireConnections(ByVal Transaction As Object)
Dim nDTS As IDTSConnectionManager90 = Me.Connections.TablaMODELO80
sqlConnecta = CType(nDTS.AcquireConnection(Nothing), SqlConnection)
End Sub
Public Overrides Sub PreExecute()
sqlComm = New SqlCommand("INSERT INTO hac_modelo180(Ejercicio,NIFPerc,NIFReP,Nombre,CodProv,Modalidad,ImpBase,PorcReten,ImpReten,EjerDev) " & _
"VALUES(@Ejercicio,@NIFPerc,@NIFReP,@Nombre,@CodProv,@Modalidad,@ImpBase,@PorcReten,@ImpReten,@EjerDev)", sqlConnecta)
sqlParam = New SqlParameter("@Ejercicio", Data.SqlDbType.SmallInt)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@NIFPerc", Data.SqlDbType.Char)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@NIFReP", Data.SqlDbType.Char)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@Nombre", Data.SqlDbType.VarChar)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@CodProv", Data.SqlDbType.TinyInt)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@Modalidad", Data.SqlDbType.SmallInt)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@ImpBase", Data.SqlDbType.Decimal)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@PorcReten", Data.SqlDbType.Decimal)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@ImpReten", Data.SqlDbType.Decimal)
sqlComm.parameters.add(sqlParam)
sqlParam = New SqlParameter("@EjerDev", Data.SqlDbType.Decimal)
sqlComm.Parameters.Add(sqlParam)
End Sub
Public Sub New()
End Sub
Public Overrides Sub ReleaseConnections()
nDts.ReleaseConnection(sqlConnecta)
End Sub
Protected Overrides Sub Finalize()
MyBase.Finalize()
End Sub
End Class
Thanks a lot for your help
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I get the following message in the vs2005 querybuilder when i do a preview:
***********************************
SQL Execution Error.
Executed SQL statement: SELECT Schoolindex, Variant, VVSchool, [index], indincl, VVRuimtes, School FROM School WHERE (Schoolindex = @PARAM1)
Error Source: SQL Server Compact Edition ADO.NET Data Provider
Error Message: @PARAM1 : Unable to cast object of type 'System.Data.SqlTypes.SqlInt32 to type System.IConvertable'.
****************************************
The same querypreview works fine without the parameter:
SELECT Schoolindex, Variant, VVSchool, [index], indincl, VVRuimtes, School FROM School WHERE (Schoolindex = 186)
Can anybody tell me why this is?
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Line 14: If li.Selected Then
Line 15: InsertClientCompanyType.InsertParameters("CompanyTypeID").DefaultValue = li.Value
Line 16: InsertClientCompanyType.InsertParameters("ClientID") = ViewState("ClientID")
Line 17:
Line 18:
Source File: C:InetpubwwwrootIntranetExternalAppsNewEmploymentClientNewClient.aspx.vb Line: 16
Here is my code behind... What am I doing wrong with grabbing the ClientID from the first stored procedure insert?
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Hi,
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TITLE: Microsoft SQL Server Management Studio
------------------------------
Unable to cast object of type 'Microsoft.SqlServer.Management.Smo.Urn' to type 'Microsoft.SqlServer.Management.Smo.Urn'. (SQLEditors)
------------------------------
BUTTONS:
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------------------------------
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TITLE: Microsoft Visual Studio
------------------------------
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-----
SET Conn=CreateObject("ADODB.Connection")
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Conn.Open
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----
Q - Whats wrong ?
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Option Compare Database
Public LngLoginId As Long
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myRS2.CursorType = adOpenDynamic
myRS2.LockType = adLockOptimisticd
myRS2.Open "SELECT E.SSN, E.LNAME, SUM(W.HOURS) FROM EMPLOYEE E, WORKS_ON W WHERE (E.SSN = W.ESSN)GROUP BY E.SSN, E.LNAME HAVING(SUM(HOURS)) < 40"
MsgBox (myRS2.GetString)
myRS2.MoveFirst
End Sub
and I have the following output:
http://www.angelfire.com/oh5/ohiostate120/untitled1.JPG
This is what I want. However I need this to be in a text box so I have the following code:
Code Snippet
Private Sub FillGUI()
On Error Resume Next
Dim myRS2 As New ADODB.Recordset
myRS2.ActiveConnection = CurrentProject.Connection
myRS2.CursorType = adOpenDynamic
myRS2.LockType = adLockOptimisticd
myRS2.Open "SELECT E.SSN, E.LNAME, SUM(W.HOURS) FROM EMPLOYEE E, WORKS_ON W WHERE (E.SSN = W.ESSN)GROUP BY E.SSN, E.LNAME HAVING(SUM(HOURS)) < 40"
Me.txtEmployee.SetFocus
Me.txtEmployee.Text = myRS2.GetString
myRS2.MoveFirst
End Sub
And i get this:
http://www.angelfire.com/oh5/ohiostate120/untitled2.JPG
How can I get the text box format to look like the msgbox format? Thanks.........
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Apr 5, 2007
First time poster, I am using MS Access and I have used the following code to get some data. It is as follows:
Code Snippet
Private Sub FillGUI()
On Error Resume Next
Dim myRS2 As New ADODB.Recordset
myRS2.ActiveConnection = CurrentProject.Connection
myRS2.CursorType = adOpenDynamic
myRS2.LockType = adLockOptimisticd
myRS2.Open "SELECT E.SSN, E.LNAME, SUM(W.HOURS) FROM EMPLOYEE E, WORKS_ON W WHERE (E.SSN = W.ESSN)GROUP BY E.SSN, E.LNAME HAVING(SUM(HOURS)) < 40"
MsgBox (myRS2.GetString)
myRS2.MoveFirst
End Sub
and I have the following output:
http://www.angelfire.com/oh5/ohiostate120/untitled1.JPG
This is what I want. However I need this to be in a text box so I have the following code:
Code Snippet
Private Sub FillGUI()
On Error Resume Next
Dim myRS2 As New ADODB.Recordset
myRS2.ActiveConnection = CurrentProject.Connection
myRS2.CursorType = adOpenDynamic
myRS2.LockType = adLockOptimisticd
myRS2.Open "SELECT E.SSN, E.LNAME, SUM(W.HOURS) FROM EMPLOYEE E, WORKS_ON W WHERE (E.SSN = W.ESSN)GROUP BY E.SSN, E.LNAME HAVING(SUM(HOURS)) < 40"
Me.txtEmployee.SetFocus
Me.txtEmployee.Text = myRS2.GetString
myRS2.MoveFirst
End Sub
And i get this:
http://www.angelfire.com/oh5/ohiostate120/untitled2.JPG
How can I get the text box format to look like the msgbox format? Thanks
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May 30, 2008
Correct me if i am wrong anywhere.
This is my table structure.
CREATE TABLE [AC].[RUN_PARMS](
[FILE_NAME] [varchar](6) NOT NULL,
[RUN_IND] [bit] NOT NULL,
[GROUP] [varchar](50) NULL,
CONSTRAINT [pk_RUN_PARMS] PRIMARY KEY CLUSTERED
(
[FILE_NAME]
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
I am using an execute package task in SSIS based on the value of RUN_IND field in RUN_PARMS table. If all the value of RUN_IND field is 0 for all the files in a group, then the execute package task should be enabled else it should be disabled. So i have used the following query.
SELECT SUM(CONVERT(INT,RUN_IND)) AS RUN_IND FROM AC.RUN_PARMS
WHERE [GROUP] = 'FIN'
This will return the value which will be greater than zero. Since i have made the value as 1 for FIN group. Imagine the FIN group has 10 files in it. The output look like,
RUN_IND
10
and
SELECT SUM(CONVERT(INT,RUN_IND)) AS RUN_IND FROM AC.RUN_PARMS
WHERE [GROUP] = 'Ven'
This will return the value which will be equal to zero. Since i have made the value as 0 for Ven group. The output look like,
RUN_IND
0
I have created a variable in the package "user::vardisablepackage".
I have set Resultset as Single for SQL task component
In the package properties (The package which has to be disabled) i have selected property as "Disable" and the expression as @User::vardisablepackage = 0 ?False:True
The problem now is i am not sure what should be the data type for vardisablepackage.
The expression will assign False to Disable property when the RUN_IND = 0.
I am unable to complete this task since i have problem assigning data type for this variable.
Please suggest your views.
Sarvan
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Jul 23, 2005
my code is using ADODB connection to connect to SQL (Virtual) Server.the way it being done is (c++):ADODB::_ConnectionPtr m_dbConn;ADODB::_RecordsetPtr m_dbRst;m_dbConn.CreateInstance(__uuidof(ADODB::Connection ));m_dbRst.CreateInstance( __uuidof( ADODB::Recordset ));m_dbConn->ConnectionString=( L"DSN=mydsn" );m_dbConn->Open("","sa","",-1);lately after installing SP3 over SQL2000, it was impossible to connect- the error message showed: login failed for user 'null)'. reason: notassociated with a trusted sql server connection.so i changed the connection string to:m_dbConn-> ConnectionString =(L"DSN=mydsn; UID=sa; PWD=;");m_dbConn->Open("","","",-1);and now it works !!what is the reason for that ?what in sql SP3 interrupt for this kind of connection ?what is the difference ?
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Sep 2, 2006
How to using Adodb.command to get Access file data??
i using this script:
dim connection as new adodb.connection
dim command as new adodb.command
dim recordset as new adodb.recordset
connection.open("connectionstring")
command.activeconnection=connection
command.commandtext="querystring"
recordset=command.execute
but,the Recordset is empty.how to using to get data on Microsoft Access database??
thank!!!!
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Mar 31, 2006
I am trying to access a table that I know exists and has data. But, when I create a recordset and check for RecordCount, I get a result -1 (no records). When I access the same table (using the same program), it reports (and I can view in a dbgrid) 752580 records exist.
Here's some of the code:
The table is originally copied from another database; I use the following code to be sure the previous connection is closed before proceeding.
If Not adoRS Is Nothing Then
If adoRS.State = adStateOpen Then adoRS.Close
Set adoRS = Nothing
End If
If Not DbConn Is Nothing Then
If DbConn.State = adStateOpen Then DbConn.Close
Set DbConn = Nothing
End If
Then a new connection (it works) is opened to access the database with the copied table:
strDbConn = "Provider=SQLNCLI;Integrated Security=SSPI;" & _
"Persist Security Info=False;Database=" & strDbName & ";" & _
"AttachDBFileName=" & DbPath & ";Data Source=.sqlexpress;" & _
"User Instance=True"
Next I tried to create the recordset:
Set adoNewRS = New ADODB.Recordset 'Set OHLC recordset
Set adoNewRS.ActiveConnection = DestDbConn
adoNewRS.Open TableName, DestDbConn, adOpenDynamic, adLockOptimistic
Next I try to get the RecordCount:
NumRecords = adoNewRS.RecordCount
At this point, NumRecords (and adoNewRS.RecordCount) = -1 (even tho I know there are 752580 records in the table).
In the adoNewRS.Open statement, I also tried using the following sql statement:
sSQL = "SELECT * FROM TableName ORDER BY [DateTime];"
It also returns a recordcount = -1.
Anybody have clue?
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Aug 22, 2007
Most of the the time my connection is created and closed fine.
However, sometimes I get Connection failures (these happen often because I am connecting to the server using a VPN connection). Once I get the connection failure, sometimes I cannot successfully recreate the connection until I kill the application and restart it. Below is my open and release code. I call release anytime the connection fails or a stored procedure fails. If you see anything wrong with it the code below that would prevent the connection from recovering please let me know.
Thanks in advance.
Code Snippet
adodb::_ConnectionPtr m_spConnection;
HRESULT InitializeConnections()
{
HRESULT hr = E_FAIL;
if (m_spConnection && m_spConnection->GetState() == adodb::adStateOpen)
{
hr = S_OK;
}
else
{
if (m_spOperationEvents)
{
const _bstr_t c_bstrEmpty(_T(""));
try
{
CComBSTR bstrInit;
hr = get_DbInitializationString(&bstrInit);
if (!m_spConnection)
{
hr = m_spConnection.CreateInstance(adodb::CLSID_Connection);
}
if(SUCCEEDED(hr))
{
m_spConnection->ConnectionTimeout=30;
hr = m_spConnection->Open((LPCWSTR)bstrInit, c_bstrEmpty, c_bstrEmpty, -1);
}
}
catch (_com_error ce)
{
hr = E_FAIL;
CString strArgs;
strArgs.Format(_T("x%x %s "), ce.Error(), (LPCWSTR)ce.Description());
m_strLastError = GetTranslatedString(eMsgConnectionError, strArgs);
}
catch(HRESULT hrException)
{
hr = hrException;
}
catch(...)
{
hr = E_FAIL;
m_strLastError = GetTranslatedString(eMsgUnknownConnectionError, NULL);
}
}
}
if (!SUCCEEDED(hr))
{
ReleaseConnections();
}
return hr;
}
// Queued thread job to release thread resources
HRESULT CSptAggregation::ReleaseConnections()
{
HRESULT hr = E_FAIL;
try
{
if (m_spConnection)
{
m_spConnection->Cancel();
if (m_spConnection->GetState()== adodb::adStateOpen)
m_spConnection->Close();
}
m_spConnection = NULL;
}
catch (_com_error ce) { hr = E_FAIL; }
catch(...) { hr = E_FAIL; }
return S_OK;
}
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Jun 23, 2006
Hi,
I have developed an application in vb.net 2005 Standard Edition and is running fine in my local machine. The executed version of the same application i tried to run in other machine and getting an error as follows :-
" Unable to install application. The application requires the assembly ADODB Version 7.0.3300.0 be installed in the global assembly cache (GAC) first "
Can you somebody help me to solve this problem.
Thanks
Saju John
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Aug 24, 2006
I did setup a Mirrored Database. Connecting from it using ADO.NET works well. It goes to the Mirror if the Principal fails.
But ADODB does not work. I get the error following error:
80004005 Invalid connection string attribute
When trying to connect to the DB in case the principal failed and the mirror is active. (MyProductiveDB is in failover state)
What do I do wrong?
Here is the code:
ADOConn = New ADODB.Connection
ADOConn.Open(CS)
CS is my Connections-String:
"Provider=SQLNCLI.1;Data Source=MyProductiveDB;Failover Partner=MyMirror;Initial Catalog=MyCat;Persist Security Info=True;User ID=MyUser;Password=xxxxxx;Pooling=True;Connect Timeout=5;Application Name=MyApplic"
Remark: When I try to add "Network Library=dbmssocn" to the connection String, I get the same error, even if the Principal is active.
Your help is very much appreciated.
Beat
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Sep 27, 2007
Hi,
I am trying to write a Macro in Excel which would connect to the database and fetch the data for me.
I am using a SQL Query and pass it to a ADODB Command object as adCmdText. The SQL Query is very big, length could be 2500 characters.
I just have read access to the database and do not have a choice to create a Stored Procedure to return a resultset.
When i try to open a recordset with the query, i get a Automation Error.
Is there a Limit on the length of the string i can pass as CommandText?
Regards,
Vikram
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Apr 29, 2008
Hi All,
I am using SQL 2005 DB and i connect it using PHP. I have one Store procedure in SQL which requires 1.5 minutes to get result.
I'm always getting error message in web after 30 seconds that Microsoft OLEDB provider for ODBC drivers, timeout expired.
I increased time in php.ini but the error comes from SQL Server. Can you please guide me to increase the time in SQL. so that timeout doesn't expired.
This will help me a lot.
THanks in advance.
GB.
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