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how to no-touch deploy the db access winform?

Posted on 2004-10-10
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Last Modified: 2012-05-05
hello
i write a winform app,in the form there is a datagrid and a button.when i click the button,it connect to the oracle,and retrieve the data to display them in the datagrid.the button click event code as following:

            private void button1_Click(object sender, System.EventArgs e)
            {
                  DataSet dataSet1=new DataSet("dataset1");            
                  String connectionString="Data Source=zbcdb;User Id=scott;Password=password;";
                  OracleConnection connection1=new OracleConnection(connectionString);
                  OracleCommand command1=new OracleCommand("select * from emp");
                  command1.CommandType=CommandType.Text;
                  connection1.Open();
                  command1.Connection=connection1;

                  OracleDataAdapter oracleDataAdapter1=new OracleDataAdapter();
                  oracleDataAdapter1.SelectCommand=command1;
                  oracleDataAdapter1.Fill(dataSet1,"emp");
                  dataGrid1.SetDataBinding(dataSet1,"emp");
            }


both the visual studio and oracle database are installed in my machine,when i try it in my machine,it works well,but after i copy the "exe" file to the iis(NO-TOUCH DEPLOYMENT),and call it from the OTHER client machine,the following exception is thrown:

************** Exception Text **************
System.DllNotFoundException: Unable to load DLL (oci.dll).
   at System.Data.OracleClient.DBObjectPool.GetObject(Object owningObject, Boolean& isInTransaction)
   at System.Data.OracleClient.OracleConnectionPoolManager.GetPooledConnection(String encryptedConnectionString, OracleConnectionString options, OracleConnection owningObject, Boolean& isInTransaction)
   at System.Data.OracleClient.OracleConnection.OpenInternal(OracleConnectionString parsedConnectionString, Object transact)
   at System.Data.OracleClient.OracleConnection.Open()
   at ch10_01.Form1.button1_Click(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
.............................................
.............................................
.............................................
..............................................

----------------------------------------
System.Data
    Assembly Version: 1.0.5000.0
    Win32 Version: 1.1.4322.573
    CodeBase: file:///c:/winnt/assembly/gac/system.data/1.0.5000.0__b77a5c561934e089/system.data.dll
----------------------------------------
....................
...................

----------------------------------------
System.Data.OracleClient
    Assembly Version: 1.0.5000.0
    Win32 Version: 1.1.4322.573
    CodeBase: file:///c:/winnt/assembly/gac/system.data.oracleclient/1.0.5000.0__b77a5c561934e089/system.data.oracleclient.dll
----------------------------------------
..........................
...........................
............................



as you can see,the client can't find the "oci.dll",because i haven't installed the oracle client software in the client machine,and i don't want to install ANY software in the client side. so that i try to copy the "oci.dll" to the same directory in the iis as the exe file.but client can't find it EITHER.maybe i should write the config file to tell the client where to find the "oci.dll",but i don't know how because i am a newbie to dotnet.


who can tell me how to solve the problem?

thank you very much!!!!!  
 
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Question by:zbcong
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Accepted Solution

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AvonWyss earned 2000 total points
ID: 12269453
The oracle client is a COM component, and System.Data.OracleClient is only an interop wrapper. Therefore, a XCOPY installation dows not work in this case. There are, however, different solutions to solve this:

- Make a service on the server that accepts remoting calls and acts as proxy for the oracle client. This would prevent the client from needing and oracle stuff, and it wouldn't even need an oracle DB connection.

- Add some code that permanently or temporarily installs the needed COM components when the application is run (basically, do what REGSVR32 does) on the fly without user interaction. This would prevent you from using an installer or anything.
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Expert Comment

by:AvonWyss
ID: 12512514
I made two suggestions which would solve the issue. No feedback recevied...
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Author Comment

by:zbcong
ID: 12520620
sorry AvonWyss, i forgot to answer.

your first suggestions can solve my problem well. to your second suggestion, i also feel some interest, could your give me a little more detailed instruction? such as: if the app register the "com" component on the fly, the app must copy the  com to local machine, how?

thank you.
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