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Catch the KeyDown event and put this :
if(e.Modifiers == Keys.Control && e.KeyCode == Keys.M)
{
}
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Hello,
I have an MS Access database that has the following structure:
# Category #
- CAT_ID
- PARENT_CAT_ID
- TITLE
I need to populate a treeView control from the table recursively.
Can you please tell how can I do that?
Your help would be greatly appreciated.
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Hello
How about this psuedocode:
foreach(DataRow r in MyTable.Rows)
{
if (MyTreeView.Nodes.Find(PARENT_CAT_ID, true).Length == 0)
MyTreeView.Nodes.Add(CAT_ID);
else
{
foreach (TreeNode MyNode in MyTreeView.Nodes.Find(PARENT_CAT_ID, true))
MyNode.Nodes.Add(CAT_ID);
}
}
Regards![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
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Hi,
how can i possibly display graphics object? i created it from a picturebox and i added something to the picture but i have no idea on how to display it as i could not convert it to image or bitmap object to display. Can anyone help?
Thanks
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Hello
ah_jiang_9 wrote: how can i possibly display graphics object?
There is a Paint event -or a similar event- that you have to handle in your control to draw whatever you want. In it's PaintEventArg.Graphics you can draw your image as you like. Some controls don't fire this event as they draw there own interface. Yet you can inherit from them or customly draw them. This depends on where you want to draw your graphics object
ah_jiang_9 wrote: i created it from a picturebox and i added something to the picture but i have no idea on how to display it
Why? It's as simple as these three lines:
pictureBox1.Image = new Bitmap(pictureBox1.Width, pictureBox1.Height); //Make a new image in the box
Graphics g = Graphics.FromImage(pictureBox1.Image); //Make graphics
g.DrawLine(Pens.Black, new Point(5, 5), new Point(30, 30)); //Draw
Regards
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Hello,
I have this project in mind that includes RS-232 input from a two axis accelerometer. I would like to create a graphical representation of the amount of tilt that the accelerometer measures yet have not a clue how to set up the graphics. I have already created the code to read the accelerometer and translate this into an angle. I wanted to display a line within a circle that represents this angle. I know the math required to find the X,Y components of this line yet dont know how to do this in C#. Any insight would be appreciated. Thanks in advance
cwkoehler
-- modified at 22:55 Thursday 6th July, 2006
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Hello
Create a form, in which create a PictureBox. Use a bitmap of your accelerometer -analog of course- with its grading -careful here;)- as the PictureBox.Image
Now Create a graphics object from that image & draw the line like this:
Point BasePoint = new Point(BaseX, BaseY);
Point GradePoint = new Point(X, Y);
pictureBox1.Image = new Bitmap("MyAccImg.bmp");
Graphics g = Graphics.FromImage(picturebox1.Image);
g.DrawLine(Pens.Black, BasePoint, GradePoint);
Regards![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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I have a simple WinForms application developed on .net2.0 and VS2005. I am able to publish the application as a ClickOnce SmartClient to a specific directory located on my machine: C:\apps\publish. Now I am trying to publish the same application from command line using msbuild with the following command...
msbuild /t:publish Solution3.sln
The problem is that the application is published to the project bin\Debug directory, not the C:\apps\publish folder. I set the publish, install, and update URL in VS publish settings to 'C:\apps\publish', but it makes no difference, it msbuild still publishes the files to bin\Debug.
Am I missing something? Changing the OutputPath created issues when attempting to install the application for the first time, so I left it alone for now.
Thanks,
Raffi
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I am trying to consume a Java Web Service through C# client. The soap body when I pass as string, the < > get encoded as <, > and that causes problem for the Webservice. Is there a way to prevent it? I tried using XmlElement but the problem is that the XmlElement already has the root element and then I get two root elements in the soap body. If I try to remove the root then it becomes invalid xml as there are two child nodes and the root is missing. Any help is appreciated.
Thanks,
Vishy
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what is the shutdown command in c# ?
erfan
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System.Diagnostics.Process.Start(@"C:\WINDOWS\system32\shutdown.exe", "/f /t 00");<br />
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i want to execute media player in my program .
how i can run a specified application from a dialog based program in C#.
erfan
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I found this snippet of code from CodeProject
DataSet dsChanges;<br />
dsChanges = ds.GetChanges(DataRowState.Modified);<br />
if(!dsChanges.HasErrors)<br />
{<br />
da.RowUpdating += new SqlRowUpdatingEventHandler(OnRowUpdating);<br />
da.RowUpdated += new SqlRowUpdatedEventHandler(OnRowUpdated);<br />
int res = da.Update(dsChanges);
da.RowUpdating -= new SqlRowUpdatingEventHandler(OnRowUpdating);<br />
da.RowUpdated -= new SqlRowUpdatedEventHandler(OnRowUpdated);<br />
}
From this article:
http://www.codeproject.com/csharp/practicalguidedatagrids3.asp
My question comes from the bolded part. This OnRowUpdated is never declared in this function.
I found another article doing basically the same thing:
public static bool SubmitChanges(ref DataTable tbl, string ConnectionString, string spUpDateName, string spInsertName, string spDeleteName)<br />
{<br />
try<br />
{<br />
SqlDataAdapter adapter1 = new SqlDataAdapter();<br />
if (spUpDateName != "")<br />
{<br />
adapter1.UpdateCommand = DAHandler.CreateUpdateViaSPCommand(spUpDateName, ConnectionString);<br />
}<br />
if (spInsertName != "")<br />
{<br />
adapter1.InsertCommand = DAHandler.CreateInsertViaSPCommand(spInsertName, ConnectionString);<br />
}<br />
if (spDeleteName != "")<br />
{<br />
adapter1.DeleteCommand = DAHandler.CreateDeleteViaSPCommand(spDeleteName, ConnectionString);<br />
}<br />
adapter1.ContinueUpdateOnError = true;<br />
adapter1.Update(tbl);<br />
adapter1.RowUpdated+=new SqlRowUpdatedEventHandler(adapter1_RowUpdated);<br />
<br />
}<br />
catch<br />
{<br />
throw;<br />
<br />
}<br />
return true;<br />
}
Same problem here. Now for the latter one I have the entire class, not just the code snippet and there is no adapter1_rowUpdated.
How do I fix this? What am I missing?
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<blockquote class="FQ"><div class="FQA">leckey wrote:</div>How do I fix this?</blockquote>
Stop trying to develop software by copy/paste. Really, I am not trying to be harsh but if you think that is the way to go you will never stop having the problems I have seen you go through in the past several weeks.
<blockquote class='FQ'><div class='FQA'>leckey wrote:</div>What am I missing? </blockquote>
You are missing how delegates work in .NET. Those bolded parts are handler methods in the class.
"Just about every question you've asked over the last 3-4 days has been "urgent". Perhaps a little planning would be helpful?"
Colin Angus Mackay in the C# forum
led mike
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Hi, i'm experiencing a weird bug with some code in my custom control's collection.
I've used this code before in same project and vs05 didn't complain for hundreds of builds...but when i needed to tinker more with the control in the designer...then something happened :P ... i now get this error everytime i add items to the collection and attempt to save or build the code:
<br />
Code generation for property 'Items' failed. Error was: ''StudioListBoxItemTypeConverter' is unable to convert 'StudioControls.Controls.StudioListBoxItem' to 'System.ComponentModel.Design.Serialization.InstanceDescriptor'.'<br />
I tried to seperate the collection from the control to narrow down the bug... "simplified" code for the collection alone are here:
http://focusedwolf.googlepages.com/GenericEventCollectionBase.cs
http://focusedwolf.googlepages.com/StudioListBoxItem.cs
http://focusedwolf.googlepages.com/StudioListBoxItemCollection.cs
http://focusedwolf.googlepages.com/StudioListBoxItemTypeConverter.cs
http://focusedwolf.googlepages.com/TestControl.cs
If you want to see the error, dump all that code into a form project and drag the TestControl onto a form...add an item through the items property...and try to save or build.
-- modified at 16:06 Thursday 6th July, 2006
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I have experienced that. Are you trying to call a specific constructor?
I found some noise that referenced a problem with the version resource using the '*' character. I removed that and it helped but only by making the problem inconsistent. I finally got tired of losing my collection and removed the use of the specific constructor.
"Just about every question you've asked over the last 3-4 days has been "urgent". Perhaps a little planning would be helpful?"
Colin Angus Mackay in the C# forum
led mike
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Hmm this is odd... i'm not getting the bug anymore and i didn't do anything except close vs and open it again... zzz owell guess its just one of those things that never makes sense.
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Or because your collection is now empty?
"Just about every question you've asked over the last 3-4 days has been "urgent". Perhaps a little planning would be helpful?"
Colin Angus Mackay in the C# forum
led mike
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No...collection is serializing added items just fine now... lol
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Looked at your TypeConverter. That is the same thing I had only I was getting a constructor with parameters. I would go along fine for days and then start producing that error. I finally got fed up with it and stopped using it. I hope you don't run into the same problem.
"Just about every question you've asked over the last 3-4 days has been "urgent". Perhaps a little planning would be helpful?"
Colin Angus Mackay in the C# forum
led mike
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Wow bug is occuring again :P
I think it might be because their are files dependant on classes in other assemblies... or just a weird vs bug...rebuild and reloading vs.net isn't getting rid of error message.
Hmm did some googling and found lots of forums with people that had this problem. This one had some interesting info: http://www.dotnet247.com/247reference/msgs/53/267795.aspx
I seem to remember having a problem similar to this a while back and it was<br />
to do with the control version and the resources being out of whack.<br />
<br />
Edit your control's AssemblyInfo so that you have an explicit version<br />
number, not one with an asterisk in it. Ensure that you do a full rebuild<br />
and maybe even remove the control from the form it's on, the toolbox and<br />
anywhere else you might have it and then add it again using the new version.<br />
<br />
If this doesn't work then I'm sorry for the wild goose chase. It's all I can<br />
think of for now...<br />
<br />
--<br />
Bob Powell [MVP]<br />
Visual C#, System.Drawing
Well i checked all the AssemblyInfo.cs files but i didnt see any "*" in the version number...all were by default 1.0.0.0 or something like that.
Tried removing control from form, but that didnt work. Couldnt figure how to remove items from toolbox other then resetting toolbox...zzz
Wow i got rid of bug...all i had to do was delete every bin and obj folder in the solution.
Wow i got bug back again... i think the cause is code being seperated in differant assembly projects
Ok all code that this control depends on is in a single assembly being referenced by a windows application project and so far no bug  I blame vs 2005 entirely! or maybe theirs something i'm doing or not doing... hmm maybe i can find a book on this stuff for 05
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FocusedWolf wrote: This one had some interesting info: http://www.dotnet247.com/247reference/msgs/53/267795.aspx
Yeah, I think that is the same one I mentioned earlier. I did have the '*' in one of my version resources and when I changed it the problem went from "broken" to "intermitent".
FocusedWolf wrote: Ok all code that this control depends on is in a single assembly being referenced by a windows application project
I can't quite picture that from your statement could you clarify please? I will try to duplicate your solution in my project and see if it works for me. 
FocusedWolf wrote: I blame vs 2005 entirely! or maybe theirs something i'm doing or not doing
No, it is definitely a bug. 
"Just about every question you've asked over the last 3-4 days has been "urgent". Perhaps a little planning would be helpful?"
Colin Angus Mackay in the C# forum
led mike
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Err the bug is back.
to re-explain my setup, my solution has a class library project with the control and its items and type converters and that generic event collection thing i made. In same solution, but in a windowsApplication project i reference the control library and drag it from the toolbox to a form.
So i think the bug here is that vs does something when presented with a control... like it "gets used to it" in some way...like when it generates the resx files or something like that. Then even if it seems to work,...you tinker with a property or part of this control and vs tries to re-"get used to it" and makes mistakes cause theirs items serialized in designer class or something...and then the error message... this is so lame lol
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