C# Discussion Boards - CodeProject

Re: Insert a row in Gridview

1-Oct-07 10:05

What button are you clicking? Check the eventarg.

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DotNetXenon1-Oct-07 10:12

DotNetXenon

1-Oct-07 10:12

You can set the EditIndex like this:

GridView.EditIndex = GridView.Rows.Count;
Hope this helps!!!

____________________________

"The only true wisdom is in knowing you know nothing."
-- Socrates

Re: Insert a row in Gridview

ss.mmm15-Oct-07 8:28

ss.mmm

15-Oct-07 8:28

Thank you. Smile | :)

Thanks

Universal Toolbox Item installation help

Jason Farrar1-Oct-07 9:06

Jason Farrar

1-Oct-07 9:06

Right now the company I work for has three different Visual studio toolbox installation utilities to install the controls into each toolbox. I've taken it upon myself to, in my free time, combine these into a single utility. The obvious route (to me anyways, I could be wrong) is to use reflection and since I don't have much experience with using reflection I thought this would be a good time to learn.

The scenario is such: I'm developing this utility in VS2002 because it's the least common denominator.

For the VS2005 procedure I figured out how to instantiate the Solution2 part of the deal(I think):

				<br />
DTE dte = (DTE)System.Activator.CreateInstance(System.Type.GetTypeFromProgID("VisualStudio.DTE.8.0"),true);<br />
Console.WriteLine(dte.Version);<br />
string tmpFile = System.IO.Path.GetFileNameWithoutExtension(Path.GetTempFileName());<br />
string tmpDir = string.Format("{0}{1}", Path.GetTempPath(), tmpFile);<br />
Type t = assem.GetType("EnvDTE80.Solution2");<br />
MethodInfo mif = t.GetMethod("GetProjectTemplate",new Type[] {typeof(string),typeof(string)});<br />
object result = mif.Invoke(dte.Solution,new object[] {"WindowsApplication.zip","CSharp"});<br />
string templatePath = result.ToString();<br />
mif = t.GetMethod("AddFromTemplate",new Type[] {typeof(string),typeof(string),typeof(string),typeof(bool)});<br />
result = mif.Invoke(dte.Solution, new object[]{templatePath, tmpDir, tmpFile, false});<br />

is equivalent to:

<br />
Solution2 solution = DesignTimeEnvironment.Solution as Solution2;<br />
string templatePath = solution.GetProjectTemplate(projectTemplate, "CSharp");<br />
Project proj = solution.AddFromTemplate(templatePath, tmpDir, tmpFile, false);<br />

I know what the following code does, it grabs a handle to the toolbox of the designated instance of the DTE, you then use the property toolbox.toolboxtabs to search through the tabs a for a matching tab name and if it doesn't find it then create the tab name. It's the first two lines that I can't figure out.

EnvDTE.Window window = DesignTimeEnvironment.Windows.Item(EnvDTE.Constants.vsWindowKindToolbox);<br />
      EnvDTE.ToolBox toolbox = (EnvDTE.ToolBox)window.Object;<br />
      ToolBoxTab CurrentTab = null;<br />
      foreach (ToolBoxTab tab in toolbox.ToolBoxTabs)<br />
      {<br />
          // Is there a match?<br />
          if (tab.Name == toolboxTabName)<br />
          {<br />
              // Yes.<br />
              CurrentTab = tab;<br />
              break;<br />
           }<br />
      }<br />
      if (CurrentTab == null)<br />
      {<br />
          // No.  Create a new one!<br />
          CurrentTab = toolbox.ToolBoxTabs.Add(toolboxTabName);<br />
      }<br />

EnvDTE.Window and EnvDTE.ToolBox are interfaces; I thought you couldn't instantiate an interface? WTF | :WTF:

Also EnvDTE is not an instanced object per say but just the class, so how would I construct
similar code using reflection? I tried using a similar approach as I did above with getting the Solution2 but I've gotten nowhere with it. I just can't seem to wrap my head around how to get the handle to the toolbox and then utilize the toolboxtabs property.

I've a feeling this is deceptively simple and I'll be wearing the Code Project Dunce Hat later but I've been banging my head against this for a week or so now on and off and finally decided I need a more experienced person's input.

“I know that I am intelligent, because I know that I know nothing.” ~Socrates

Re: Universal Toolbox Item installation help

TJoe1-Oct-07 13:10

TJoe

1-Oct-07 13:10

I haven't worked with integrating into VS before, but I think I help explain some of the code. The first line:

EnvDTE.Window window = DesignTimeEnvironment.Windows.Item(EnvDTE.Constants.vsWindowKindToolbox);

The class/interface DesignTimeEnvironment has a property called Windows (which I'm assuiming are the windows in the IDE). The type of the Windows property has a method called Item. This method takes a constant enumeration to determine which type of window to return.

Now the Item method is returning an interface (of EnvDTE.Window as you say). This doesn't mean the interface was instantiated. The IDE most likely has a class for the Toolbox window, but only exposes to external applications through the interface.

So to use reflection, you would need to get the Windows property (through GetProperty) then execute the Item method.

The same concept applies for the interface on the second line. Internally it's using a class, but only exposes it using the EnvDTE.ToolBox interface.

Take care,
Tom

-----------------------------------------------
Check out my blog at http://tjoe.wordpress.com

MSMQ Triggers

Not Active1-Oct-07 9:06

1-Oct-07 9:06

OK this is getting frustrating. I've been experimenting with using triggers for a MSMQ project and thought I'd start with something simple. So I created a private queue on my machine, created a rule that would open an exe (calc.exe), applied it to a trigger on the queue and sent a message to it. Nothing. The message gets to the queue, but the trigger never fires. I've looked high and low for examples, found few, and tried to follow them, but the outcome is always the same, the trigger never seems to be fired.

Anyone have some experience with MSMQ Triggers? What is going wrong here?

only two letters away from being an asset

led mike1-Oct-07 9:25

led mike

1-Oct-07 9:25

Do you have Triggering installed and started?

Not Active1-Oct-07 9:42

1-Oct-07 9:42

Wouldn't be able to add a trigger if not.

only two letters away from being an asset

Pete O'Hanlon1-Oct-07 9:43

Pete O'Hanlon

1-Oct-07 9:43

Check your task manager. I suspect that Calc is being started up "invisible" under the Network Services user account.

Deja View - the feeling that you've seen this post before.

Not Active1-Oct-07 9:50

1-Oct-07 9:50

You are correct, sir. Thanks. The examples, of course, didn't mention this possiblity.

Now to do something more useful.

only two letters away from being an asset

Overloading comparisson operator

Pete O'Hanlon1-Oct-07 9:58

Pete O'Hanlon

1-Oct-07 9:58

You're welcome. Those examples, they're really great aren't they?

Deja View - the feeling that you've seen this post before.

Fernando A. Gomez F.1-Oct-07 8:31

Fernando A. Gomez F.

1-Oct-07 8:31

Hello. I have this class that overloads the comparisson operator (==). It is throwing me an overflow exception:

public class DataItem
{
    private int _id;
    ...
    public static bool operator== (DataItem item1, DataItem item2)
    {
        if (item1 != null && item2 != null)
            return item1._id == item2._id;
        else
            return false;
    }

    public static bool operator!= (DataItem item1, DataItem item2)
    {
        return !(item1 == item2);
    }
    ...
}

The problem is that in the operator== method, I validate that both items are not null, but (because of the comparisson of the object to null) it calls again the operator== method. So it seems that I cannot validate whether the objects are null or not. Anyone has an idea of what can I do about this?

Thanks in advance.

Hope is the negation of reality - Raistlin Majere

Re: Overloading comparisson operator

Not Active1-Oct-07 8:44

Re: Overloading comparisson operator

1-Oct-07 8:44

http://www.codeproject.com/csharp/cssimpolymorph.asp[^]

only two letters away from being an asset

Fernando A. Gomez F.1-Oct-07 8:50

Fernando A. Gomez F.

1-Oct-07 8:50

Thanks!

Hope is the negation of reality - Raistlin Majere

dataGridview Question

sajid.salim.khan1-Oct-07 7:21

1-Oct-07 7:21

i have a datagridview on a form the single operation i want is that when the data displayed on the gridview the gridview.enabled command must be false but i want the scroll bars to be active i have done the following code
datgridview1.enabled = false; but it also locks the scrollbars both vertical and horizontal i want that this must be active

sas

Not Active1-Oct-07 7:29

1-Oct-07 7:29

As you can see it doesn't work that way. What is it you are trying to accomplish?

only two letters away from being an asset

sajid.salim.khan1-Oct-07 7:36

1-Oct-07 7:36

the problem i wanto solve is the datagridview must be locked but its vertical and horizontal scroll bars must be active

sas

Not Active1-Oct-07 7:55

1-Oct-07 7:55

What do you mean by locked? Don't allow the uses to edit it then.

only two letters away from being an asset

sajid.salim.khan1-Oct-07 8:07

1-Oct-07 8:07

sir dont u understand my qestion its simple i have written the following code
datgridview1.enabled= false;
the problem is that the scroll bars are also disabled i want the scroll bars to be active

sas

Not Active1-Oct-07 8:14

1-Oct-07 8:14

sajid.salim.khan wrote:
dont u understand my qestion

Apparently not.

Again, what is the desired outcome you are looking for? Do you want to display the datagrid to the user with the ability scroll, but without the ability to edit records?

If this isn't what you want, perhaps you need to take a few moments to think about it, and describe your problem better.

only two letters away from being an asset

sajid.salim.khan1-Oct-07 8:23

1-Oct-07 8:23

I you want to display the datagrid to the user with the ability scroll, but without the ability to edit records

sas

Not Active1-Oct-07 8:42