Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

Hi Friends,

We developed one windows application using VS 2005 with framework 2.0. This application is running perfectly on 32 bit Operating System. Now we need to give support for 64 bit OS.

While working with 64 bit Operating System we are getting the below error message.

"Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))".

Following is the code block

System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Driver));
this.axDriver = new AxCCNAccess.AxDriver();
((System.ComponentModel.ISupportInitialize)(axDriver)).BeginInit();
SuspendLayout();
//
// axDriver
//
axDriver .Enabled = true;
axDriver .Location = new System.Drawing.Point(241, 211);
axDriver .Name = "axDriver ";
axDriver .OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axDriver .OcxState")));
axDriver .Size = new System.Drawing.Size(41, 42);
axDriver .TabIndex = 0;
//
// driver
//
AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
ClientSize = new System.Drawing.Size(292, 266);
Controls.Add(axDriver );
Name = "Driver";
Text = "Driver";
try
{
((System.ComponentModel.ISupportInitialize)(axDriver )).EndInit();
}
catch (Exception ex)
{
string sss = ex.Message;
}
ResumeLayout(false);

Getting issue in the try block.

Please help

Regards,
Nidheehs

It would appear to me that one of the COM component references from your app isn't registered properly on the 64 bit machine. You'd have to register it using RegSvr32.

You are getting THIS error returned to you:


Because the ComponentModel "System.ComponentModel.ISupportInitialize" isn't registered properly on the system.

Also, for more in depth debugging purposes, try using ex.ToString instead. It will return a lot more information for you to go by because this will return the full exception to a string.