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How can I use ApplicationClass and DsoFramerControl together?

Posted on 2008-06-11
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Last Modified: 2013-12-17
I have embedded an instance of MS Word into a c# application using the DSOframer control from Microsoft.  How can I programmatically insert text into the embedded instance?

I've included a simple code snippet to demonstrate what I'm trying to do.
/* Note: I've broken some of the statements into multiple
         lines, hopefully this improves readability */
 
private void btnOpen_Click(object sender, EventArgs e)
{
    if (_openFileDialog == null)
    {
        _openFileDialog = new OpenFileDialog();
        _openFileDialog.Filter = "Microsoft Office Files|*.doc;*.docx;
            *.docm;*.rtf;*.xls;*.xlsx;*.xlsm;*.xlsb;*.csv;*.ppt;
            *.pptx;*.pptm;*.vsd;*.vdx|All Files|*.*";
    }
    DialogResult result = _openFileDialog.ShowDialog();
    if (result == System.Windows.Forms.DialogResult.OK)
    {
        try
        {
            axFramerControl1.Select();
            axFramerControl1.Open(_openFileDialog.FileName);
            Form1.ActiveForm.Text = "Host Word Test - " + axFramerControl1.DocumentName;
 
        }
        catch (Exception)
        {
            
        }
    } 
}
 
 
/* Here I'd like this button to insert text into the instance of word opened above */
ApplicationClass WordApp;
private void btnInsert_Click(object sender, EventArgs e)
{
    WordApp = new ApplicationClass();
    
    /* Do something here? The only way I've been able to do
       something is to use:
       object fileName = _openFileDialog.FileName;
       object readOnly = false;
       object isVisible = true;
       object missing = System.Reflection.Missing.Value;
       WordApp.Visible = true;
       WordApp.Documents.Open(ref fileName, ref missing, ref readOnly,
          ref missing, ref missing, ref missing, 
          ref missing, ref missing,        
          ref missing, ref missing, ref missing, ref isVisible, ref 
          missing, ref missing, ref missing, ref missing);
       
       which opens up another window, and then is only in read-only mode
       */     
    
    // print to cursor location
    WordApp.Selection.TypeText("Insert1");
}

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Question by:guxiyou
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9 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 21768522
Are you saying that this isn't doing anything?

      WordApp.Selection.TypeText("Insert1");
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Author Comment

by:guxiyou
ID: 21769665
Well, if I use the code as is (ie with parts of the code commented out), then I get an error, "Object reference not set to an instance of an object." If I use the code with the commented lines back in, then it will open up a separate instance of MS Word (outside the application) and then insert into that instance.
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LVL 96

Expert Comment

by:Bob Learned
ID: 21772427
Is it WordApp or WordApp.Selection that is null?
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Author Comment

by:guxiyou
ID: 21772817
It is the WordApp.Selection that is null. As the code is written there is no way for WordApp to know which document it is associated with.  In the commented out code I can use WordApp.Documents.Open(...) to solve this problem, but this opens a new instance, which is not the behavior that I want.
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LVL 96

Expert Comment

by:Bob Learned
ID: 21774566
So, you are using the DSOframer to open a Word document, using the file association?
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Author Comment

by:guxiyou
ID: 21778939
I give the user a prompt to select which file they want to open, and then open the file they selected using the following command (as shown in the code snippet):

axFramerControl1.Open(_openFileDialog.FileName);
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LVL 96

Expert Comment

by:Bob Learned
ID: 21779073
You can't use the separate ApplicationClass, you would need to get a reference to the embedded instance, and that I am not sure of how to do.
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Author Comment

by:guxiyou
ID: 21779107
Yeah, thats the problem I'm hoping that someone can help with :)
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Accepted Solution

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guxiyou earned 0 total points
ID: 21779430
Ok, I figured out the solution!! In order to get control of the embedded instance you use the following steps:

1. Open the file using axFramerControl
2. Cast axFramerControl into a DocumentClass
3. Cast the DocumentClass.Application to ApplicationClass

In case anyone is interested, I'm attaching another code snippet that shows it working.
ApplicationClass WordApp;
private void btnOpen_Click(object sender, EventArgs e)
{
    if (_openFileDialog == null)
    {
        _openFileDialog = new OpenFileDialog();
        _openFileDialog.Filter = "Microsoft Office Files|*.doc;*.docx;
               *.docm;*.rtf;*.xls;*.xlsx;*.xlsm;*.xlsb;*.csv;
               *.ppt;*.pptx;*.pptm;*.vsd;*.vdx|All Files|*.*";
    }
    DialogResult result = _openFileDialog.ShowDialog();
    if (result == System.Windows.Forms.DialogResult.OK)
    {
        try
        {
            axFramerControl1.Select();
            axFramerControl1.Open(_openFileDialog.FileName);
            Form1.ActiveForm.Text = "Host Word Test - " + 
                                    axFramerControl1.DocumentName;
 
        }
        catch (Exception)
        {
            
        }
	DocumentClass doc = DocumentClass)axFramerControl1.ActiveDocument;
	WordApp = (ApplicationClass)doc.Application;
    } 
}
 
private void btnInsert_Click(object sender, EventArgs e)
{
    WordApp.Selection.TypeText("Insert1");
}

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