Migrating the CommonDialog print dialog

2. March 2012 15:06 by Mrojas in Printing, VB6 Migration  //  Tags: , , , ,   //   Comments (0)

In VB6 you could use the commondialog to show several of the 
standard operating system dialogs. For example show the a 
the print setup dialog box or the print dialog box.

VB6 Example showing the Print Setup Dialog Box

cdlgprint.Flags = cdlPDPrintSetup


In .NET you have 4 kinds of Priting Dialogs:






So during a migration remember that if your were using the the CommonDialog.Flags 

property to show the PrintSetupDialog you will have to change that for something like


var cdlgprint_ForPrintSetup  = new PrintSetupDialog();


Setting the Default Printer in .NET

The following C# code shows how to use WMI to query printers information, set and get default printer.
public bool SetDefaultPrinter()
    System.Management.ManagementObjectSearcher search = 
default(System.Management.ManagementObjectSearcher); System.Management.ManagementObjectCollection results =
default(System.Management.ManagementObjectCollection); System.Management.ManagementObject printer =
default(System.Management.ManagementObject); search =
new System.Management.ManagementObjectSearcher("select * from win32_printer"); results = search.Get(); //Get Default Printer System.Management.ManagementObject defaultPrinter = null; foreach (System.Management.ManagementObject foundPrinter in results) { System.Management.PropertyDataCollection
propertyDataCollection = foundPrinter.Properties; if ((bool)foundPrinter["Default"]) // DEFAULT PRINTER { System.Diagnostics.Debug.WriteLine(foundPrinter["Name"]); System.Diagnostics.Debug.WriteLine(foundPrinter["Location"]); } } //Sets new default Printer foreach (System.Management.ManagementObject foundPrinter in results) { System.Diagnostics.Debug.Print(foundPrinter["Name"].ToString()); if (foundPrinter["Name"].Equals("PDFCreator")) { System.Management.ManagementBaseObject outParams =
foundPrinter.InvokeMethod("SetDefaultPrinter", null, null); if (outParams == null) System.Diagnostics.Debug.WriteLine("Unable to set default printer"); Int32 retVal = (int)(uint)outParams.Properties["ReturnValue"].Value; if (retVal == 0) return true; else return false; } } return false; }