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Hi guys,
I can't find this anywhere on the web after googling for hours, so the first person with the correct answer will be awarded the title of "Genius".
Here's my problem: I'm doing some late binding in C# with PowerPoint (automation). I can call methods and get/set properties using Type.InvokeMember, for example:
returnObject = instance.GetType().InvokeMember(methodName, BindingFlags.InvokeMethod, null, instance, parameters);
That works just fine. But how do I subscribe to and handle events that are fired from a PowerPoint object using late binding? Can I use InvokeMethod and pass in a delegate? I have no idea.
Thanks in advance, you guys are the greatest!
Andy
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You can subscribe to events through the same code you had posted. Look for add_XXX and remove_XXX methods, the compiler calls them for you when you use the += and -= operators.
Regards
Senthil
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Hi,
I am planning to write a software which reads proxy servers from a txt file and connecting a site through a proxy server and clicking a link on the site. Can somebody draw a roadway to this software. I have C# experience but I don't know which subjects handled with this project???
Thank you,
Cem
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Hi,
I have a byte array (guid) which I would like to represent as a string containing hexadecimal values.
(eg. 'A0FFE7...')
I have tried the System.Uri.HexEscape function which does calculates the correct values, but a '%' is set before each hexvalue (thus: %A0%FF%E7...) Trying to remove the '%' failed (probably because of some internal representation).
Is there a way how I can get the required result?
(I've looked in a guid object as wel, but couldn't find anything.)
tnx.
"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix
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If it's a GUID, simply call ToString(), that should do the job for you.
Regards
Senthil
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Actually the byte[] is the GUID out of the database (no idea how they created it) In order to use this guid for queries I need the string representation of the bytes in hexadecimal form.
I did try the guid.ToString() both it didn't work.
Any other idea?
(if all else fails I can always go to the old fashion table  .
tnx.
"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix
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I am trying to update a relational record but not successful. Please help. Here is the code.
//// "Table" to "names".
OleDbDataAdapter da1 = new OleDbDataAdapter("Select * FROM Name",myConnection);
da1.TableMappings.Add("Table","Name");
da1.Fill(ds);
/// Fill the Dataset with Orders, map Default Tablename
OleDbDataAdapter da2 = new OleDbDataAdapter("SELECT * FROM Detail",myConnection);
da2.TableMappings.Add("Table","Detail");
da2.Fill(ds);
System.Data.DataRelation relCustOrd;
System.Data.DataColumn colMaster1;
System.Data.DataColumn colDetail1;
colMaster1 = ds.Tables["Name"].Columns["ID"];
colDetail1 = ds.Tables["Detail"].Columns["ID"];
relCustOrd = new System.Data.DataRelation("RelCustOrd",colMaster1,colDetail1);
ds.Relations.Add(relCustOrd);
da1.Update(ds, "Name");
da2.Update(ds, "Detail");
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Hi msogun,
Iam able to work with the simillar code without any error. It will be very easy if you can send the error message.
Iam using the following code:
adptr = new SqlDataAdapter("select * from employees", connstring);
adptr.Fill(ds,"employees");
adptr2 = new SqlDataAdapter("select * from employeeadd",connstring);
adptr2.Fill(ds,"employeeadd");
DataColumn col1 = ds.Tables[0].Columns["empid"];
DataColumn col2 = ds.Tables[1].Columns["empid"];
ds.Relations.Add("Employee Address",col1,col2);
SqlCommandBuilder bldr1 = new SqlCommandBuilder(adptr);
bldr1.QuotePrefix = "[";
bldr1.QuoteSuffix = "]";
SqlCommandBuilder bldr2 = new SqlCommandBuilder(adptr2);
bldr2.QuotePrefix = "[";
bldr2.QuoteSuffix = "]";
adptr.Update(ds,"employees");
adptr2.Update(ds,"employeeadd");
Regards
SGS
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Is there any way to create an AVIStream in memory?
without having to write to disk?
I’ve tried using the AVIStreamCreate function from avifil32.dll, but it keeps returning an error.
I need to capture video from a webcam, to a compressed avistream.
And then send the compressed stream over an LAN.
This is the code:
<br />
AVISTREAMINFOW aviStreamInfo = new AVISTREAMINFOW();<br />
<br />
aviStreamInfo.fccType = _fccType;<br />
aviStreamInfo.fccHandler = _fccHandler;<br />
aviStreamInfo.dwScale = 1;<br />
aviStreamInfo.dwRate = _frameRate;<br />
aviStreamInfo.dwSuggestedBufferSize = _height * _stride;<br />
aviStreamInfo.dwQuality = 0xffffffff;<br />
aviStreamInfo.rect_bottom = _height;<br />
aviStreamInfo.rect_right = _width;<br />
<br />
<br />
_result = AviFile.AVIStreamCreate(out _aviStream, 0, 0, ref aviStreamInfo);<br />
<br />
_result returns -2147221164
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Most likely you're not properly marshalling these types, or are using incorrect types during the AVIStreamCreate method. 2 questions I would ask, is are you sure that _aviStream should be an out parameter instead of a ref (i.e. do you need to create it first?). Second question, what type is _aviStream? Windows Media SDK specifies it should be a pointer to a PAVISTREAM. Make sure you've marshalled this type correctly, it should be the address of a pointer to an IAVIStream interface.
After looking further at the MSDN documentation, I see Microsoft recommends "you should not need to call this function. Some functions, such as CreateEditableStream and AVIMakeCompressedStream, use it internally." You ought to use one of those methods instead.
Tech, life, family, faith: Give me a visit.
Judah Himango
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Question 1.
I've tryed this
<br />
[DllImport("avifil32.dll")]<br />
public static extern int CreateEditableStream(out IntPtr ppsEditable, int psSource);<br />
<br />
private IntPtr _aviEditable;<br />
private IntPtr _aviEditableCompressed;<br />
<br />
_result = AviFile.CreateEditableStream(out _aviEditable, 0);<br />
<br />
if(_result != 0)<br />
{<br />
throw new AviException("Failed to create editable AVI stream.", _result);<br />
}<br />
And it returns an address (eg. no error)
So i don't think i need to create it first.
BUT! it wont do
<br />
AVICOMPRESSOPTIONS EditablecompressionOptions = new AVICOMPRESSOPTIONS();<br />
<br />
EditablecompressionOptions.fccType = _fccType;<br />
EditablecompressionOptions.fccHandler = _fccHandler;<br />
EditablecompressionOptions.lpFormat = new IntPtr(0);<br />
EditablecompressionOptions.lpParms = new IntPtr(0);<br />
<br />
_result = AviFile.AVIMakeCompressedStream(out _aviEditableCompressed, _aviEditable, ref EditablecompressionOptions, 0);<br />
<br />
if(_result != 0)<br />
{<br />
throw new AviException("Failed to create editable compressed AVI stream.", _result);<br />
}<br />
But, if it is a file based avistream it works 
Question 2.
The _aviStream is IntPtr
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Have you looked at this page? I see that it uses some of the functions we're talking about, maybe you can gain some understanding from it.
Tech, life, family, faith: Give me a visit.
Judah Himango
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Yep....I know it.....It's the lib i use.
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I want to store some matrix-liked values.
The Column size is fixed to 4. And the Row size is not limited.
What method can i used?
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Use a either a multidimensional array or a jagged array. See this MSDN article for more information.
I would suggest using a jagged array. To do matrix-like array with 4 columns:
// a jagged array, also known as an "array of arrays"
byte[][] myArray = new byte[4][];
Each element in the array will be another byte array. This will allow you to define rows, where each row is an array of values, and each row's size is independent of the size of other rows.
Tech, life, family, faith: Give me a visit.
Judah Himango
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Experts,
I wish to display a C# DataGrid exactly as it appears on a C# Form after saving the DataSet to a file. The format (xml or html) does not matter (I'm assuming these are my only choices). The best I can do so far is:
1. call the DataSet.WriteXMLSchema method to create an xsl file
2. call the DataSet.WriteXML method to create my XML file
3. Create an XslTransform object
4. Load the xsl file via XslTransform.Load
5. Transform my ZML file to HTML via the XslTransform.Transform(source, destination) method
However, the HTML file does not contain any of the table formatting (since the generated xsl file doesnt contain table formatting). I realize I can create the XSL file by hand, but I was hoping there was a way to do it automatically such that table formatting is included. Any suggestions, either in creating an XML file with formatting or transforming a standard xml file to html such that formatting is preserved?
Thanks in advance.
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I would add a new voice at the windows menu that appear if someone right click on whichever inputbox or textbox of whichever application running.
how?
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I already answered your question on the previous page. Look into Windows Shell integration.
Tech, life, family, faith: Give me a visit.
Judah Himango
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Yes but i've founded nothing about.
Can you show me some tutorial?
Furthermore i know it is possible add a new voice to the Windows context menu by RegKey. But i don't know where is the key value about rightclick context menu of Windows InputTextbox.
Thanks
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yes but there is not explained how create a new key for right-click OF TEXTBOX.
It is not deducible by alone, i need some indication.
Sorry
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Ah, my mistake, I misunderstood before as your English is not your first language.
For creating a context menu item that integrate into all TextBox controls in Windows, I cannot help you. It is possible, and will include Windows Shell integration, but I don't have any articles to point you to. Sorry.
Tech, life, family, faith: Give me a visit.
Judah Himango
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Ok, thank you, but are there someone know that?
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Yes. I suggest you post this topic in the forum again tomorrow.
If you do post again, use a different subject for your post. "how add new voices to the windows menu" is difficult for English speakers to understand. Instead, try something similar to "how to add a new option to Windows textbox context menu"
Tech, life, family, faith: Give me a visit.
Judah Himango
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thanks friend! 
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