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You're welcome!
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi, I am using Windows media player in my project, if I call media player from my main form its playing, I have written code that when I click Wmp it goes to main form but when I do this it is showing "Attempted to read or write protected memory. This is often an indication that other memory is Corrupt". Can anyone provide solution for this, Thanks in advance .
Mainform code:
Frmads frm=new frmads(this);
Frm.show();
This.hide();
Ads Form code:
If(e.newstate = =2)
{
Frmmain.Activate();
Frmmain.show();
This.close();
}
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Please do not post the same question in multiple places - it wastes peoples time and effort.
You already have this in QA so posting here just duplicates work.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hello
I have a small problem. I have this in my XAML file
<Image
x:Name="MyPic"
HorizontalAlignment="Left"
Source="..\imgs\xxxx.jpg">
Now I want to change the picture during runtime. I found some examples how to do that but I don't want to load the picture from the hard disk. When I give my programm away I don't want to have put the image files to it too. It would be much nicer if the pictures would be inside my programm as resource and if I could exchange them during runtime from the resource. I tried to add the picture to the resource and then load from there:
m_Img = Properties.Resources.ResourceManager.GetObject("MyPicture") as Image;
MyPic.Source = m_Img.Source;
But m_Img is null
What am I doing wrong?
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Might be a good thing if you describe exactly how you bind/put the images to/in the Resource bag ... and/or show relevant code.
See if this is useful: [^].
«Beauty is in the eye of the beholder, and it may be necessary from time to time to give a stupid or misinformed beholder a black eye.» Miss Piggy
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Hi,
I have a weird problem, hopefully someone can shine a light on it?
The user gets a list of defects on a product from the database. I put them in a List<drumdefect>, like so:
while (rdr.Read())
{
DrumDefect defect = new DrumDefect()
{
AVI_Defect = new AVIDefect()
{
SequenceNumber = (rdr["AVIProdUDefectSeqNr"] != DBNull.Value) ? int.Parse(rdr["AVIProdUDefectSeqNr"].ToString()) : (rdr["MVIProdUDefectSeqNr"] != DBNull.Value) ? int.Parse(rdr["MVIProdUDefectSeqNr"].ToString()) : -1,
Code = (rdr["AVIProdUDefectCode"] == DBNull.Value) ? "# 0" : rdr["AVIProdUDefectCode"].ToString(),
Name = (rdr["AVIProdUDefectName"] == DBNull.Value) ? "NODEFECT" : rdr["AVIProdUDefectName"].ToString(),
Severity = (rdr["AVISeverityLevelID"] == DBNull.Value) ? DefectSeverity.NODEFECT : (DefectSeverity)int.Parse(rdr["AVISeverityLevelID"].ToString())
},
MVI_Defect = new Defect()
{
Code = (rdr["MVIProdUDefectCode"] == DBNull.Value) ? "# 0" : rdr["MVIProdUDefectCode"].ToString(),
Name = (rdr["MVIProdUDefectName"] == DBNull.Value) ? "NODEFECT" : rdr["MVIProdUDefectName"].ToString(),
Severity = (rdr["MVISeverityLevelID"] == DBNull.Value) ? DefectSeverity.NODEFECT : (DefectSeverity)int.Parse(rdr["MVISeverityLevelID"].ToString())
},
FVI_Defect = new Defect()
};
list.Add(defect);
}
Then I import them in a datagridview like so:
_SelectedDrum.Defects = database.GetList();
dataGridViewDefects.DataSource = null;
dataGridViewDefects.DataSource = _SelectedDrum.Defects;
dataGridViewDefects.Refresh();
The user can add a defect, so I add one like this:
DrumDefect defect = new DrumDefect()
{
AVI_Defect = new AVIDefect()
{
SequenceNumber = -1,
Code = "# 0",
Name = "NODEFECT",
Severity = DefectSeverity.NODEFECT
},
MVI_Defect = new Defect()
{
Code = "# 0",
Name = "NODEFECT",
Severity = DefectSeverity.NODEFECT
},
FVI_Defect = new Defect()
};
_SelectedDrum.Defects.Add(defect);
it all works fine, except when the database list is empty, the user adds a defect, and you click with the mouse in the datagridview (but only at the click), then the application crashes with this error:
System.IndexOutOfRangeException occurred
Message=Index -1 does not have a value.
Source=System.Windows.Forms
StackTrace:
at System.Windows.Forms.CurrencyManager.get_Item(Int32 index)
at System.Windows.Forms.CurrencyManager.get_Current()
at System.Windows.Forms.DataGridView.DataGridViewDataConnection.OnRowEnter(DataGridViewCellEventArgs e)
at System.Windows.Forms.DataGridView.OnRowEnter(DataGridViewCell& dataGridViewCell, Int32 columnIndex, Int32 rowIndex, Boolean canCreateNewRow, Boolean validationFailureOccurred)
at System.Windows.Forms.DataGridView.SetCurrentCellAddressCore(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick)
at System.Windows.Forms.DataGridView.OnCellMouseDown(HitTestInfo hti, Boolean isShiftDown, Boolean isControlDown)
at System.Windows.Forms.DataGridView.OnCellMouseDown(DataGridViewCellMouseEventArgs e)
at System.Windows.Forms.DataGridView.OnMouseDown(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.DataGridView.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Xerox.ODB2.twister.Program.Main() in c:\Users\y952hrym\Documents\CS_Projects_2\Twister\Twister\Twister.View\Program.cs:line 18
InnerException:
Thanks
modified 15-Jun-17 4:22am.
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Do you have an event handler method set up for the click event?
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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yes i have, but it does not reach the breakpoint.
private void dataGridViewDefects_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
}
in fact i have the following event procedures, but none of them is the source of the problem (breakpoint not hit when the error occures)
this.dataGridViewDefects.CellMouseClick += new System.Windows.Forms.DataGridViewCellMouseEventHandler(this.dataGridViewDefects_CellMouseClick);
this.dataGridViewDefects.CellMouseDoubleClick += new System.Windows.Forms.DataGridViewCellMouseEventHandler(this.dataGridViewDefects_CellMouseDoubleClick);
this.dataGridViewDefects.RowEnter += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridViewDefects_RowEnter);
this.dataGridViewDefects.Enter += new System.EventHandler(this.dataGridViewDefects_Enter);
this.dataGridViewDefects.KeyDown += new System.Windows.Forms.KeyEventHandler(this.dataGridViewDefects_KeyDown);
this.dataGridViewDefects.Leave += new System.EventHandler(this.dataGridViewDefects_Leave);
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Are any of the methods in the stack trace yours, or are they all framework?
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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they are all framework, except maybe OnRowEnter, but the breakpoint i set did not get hit.
private void dataGridViewDefects_RowEnter(object sender, DataGridViewCellEventArgs e)
{
try
{
if (_SelectedDrum != null && e.RowIndex > -1) _SelectedDefect = _SelectedDrum.Defects[e.RowIndex];
}
catch (Exception exc)
{
Logger.LogException(exc);
}
}
the application crashes in the line:
Application.Run(new TwisterForm());
modified 15-Jun-17 4:51am.
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Can you try enabling all exceptions?
From the menu, "Debug...Exceptions", and tick everything in the "Thrown" column. That way, even if an exception is being handled, the code should break (and the reference sources should help you locate why).
Trouble is that if I do a "minimum setup" to mimic your problem, I get no exception:
public class MyObject
{
public string Text { get; set; }
public int Value { get; set; }
}
private void button1_Click(object sender, EventArgs e)
{
MyObject mo = new MyObject();
mo.Text = "hello";
mo.Value = 666;
myList.Add(mo);
myDataGridView.Refresh();
}
private List<MyObject> myList = new List<MyObject>();
private void MyButton_Click(object sender, EventArgs e)
{
myDataGridView.DataSource = null;
myList = new List<MyObject>();
myDataGridView.DataSource = myList;
myDataGridView.Refresh();So I can't get any additional info to work from.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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That looks like a bug in the framework.
According to this post from 2011[^], you should be able to work around it by creating a new list if the existing list is empty when you add the new item:
if (_SelectedDrum.Defects.Count == 0)
{
_SelectedDrum.Defects = new List<DrumDefect> { defect };
dataGridViewDefects.DataSource = null;
dataGridViewDefects.DataSource = _SelectedDrum.Defects;
dataGridViewDefects.Refresh();
}
else
{
_SelectedDrum.Defects.Add(defect);
}
Or there's this StackOverflow answer[^] which suggests using a BindingList<T> instead of a List<T>.
If you can reproduce the problem with a simple example application, it might be worth reporting the bug on Connect[^] to see if it can be fixed in a future version.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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very interesting, thanks a lot!
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When modifying the contents of "list controls", you have to be sensitive to where the "selected index" and "selected item" wind up.
Often, it needs to be "reset" to an existing item (if there are any) from "-1" (after some operation); which signifies no items OR "nothing selected".
(In WPF, for example, the "selected event" will fire during control initializing; which can foul up your app if you don't anticipate it).
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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i am assign to create a application that allow video and text chat both but the problem is how it can be done? this application should be window form , secure , doesn't allow any other third party like sip-h.323-or any other server. simply application should be like tcp/IP but also have video call feature. please guide me is study a lot about this
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What do you already know? Do you know how to send messages over TCP/IP?
Basically, you're going to need a video stream and an audio stream. You're going to transmit the merged streams over the network. With a little bit of hard work on your part, you should be able to get some ideas from this article. A Simple C# Wrapper for the AviFile Library[^]
This space for rent
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i already implement socket client server program that give me proper output now the task 2 video call same as one like using ip address and port so that no other third party should involve I also done some tutorial on wedrtc but due to security or third party issue I cannt use it, also use video char activex but it demand to buy this sdk. so im helpless know
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You aren't helpless. Read the article that I linked to. Download the code and study it. Learn how it works and then adapt it to what you need. Most of the work has been done for you already in there - it's up to you to do a bit of studying now.
This space for rent
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Expanding on the other reply. Very broadly there are three parts
1. Text chat
2. Video
3. Wrap both of the above.
So if you know how to do 1 and 2 then 3 should get you started. If you don't know how to do any of that then I suggest strongly that you start with 1. Do not work other others until you have implemented the first one.
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done task 1 already by socket programming (ip,por) client server. but add new feature is video. I study about directx or direct show but not clearly understand it. add video feature without involving third party
please help me
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Why would you write this stuff when you can get it off-the-shelf or free, depending on your needs?
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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My presumption is that "assign" means school work.
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A pointy-head boss? A code monkey in a code factory?
(I had one that couldn't understand how I could "enlarge" a report by using a "smaller" font; took him months to come to self-realization after kicking me out of his office when I suggested it).
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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no not school work . this is my comapany work making app for bank
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