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This is awful advice for the posted homework question.
1!
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Hi! I really don't know why I get this error--> System.Runtime.InteropServices.COMException everytime i try to import excel files into my application. When I tried using the sample code directly calling it from the main function, it worked. But when I put the sample code in an area where the user will be the one to choose if he/she wants to import excel files or not, I have that error...I really don't understand why... Thanks!
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Hello everyone,
Greetings from Brazil! Please help! I have a DataGridView in a windows form with three columns:
Column1 is TipoComboBoxColumn
Column2 is QuantidadeColumn
Column3 is SementeComboBoxColumn
I need the SementeComboBoxColumn to display values according to the value I select in the TipoComboBoxColumn.
How do I go about accomplishing that? The code below works in part, BUT when I'm editing the value of SementeComboBoxColumn, the other values in this column disappearin the other rows.
private void tabBAdetDataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (tabBAdetDataGridView.Columns[e.ColumnIndex].Name == "EspecieComboBoxColumn")
{
this.tabSementesTableAdapter.FillByTipo(this.sascrDataSet.tabSementes, tabBAdetDataGridView.Rows[e.RowIndex].Cells["TipoComboBoxColumn"].Value.ToString());
this.EspecieComboBoxColumn.DataSource = this.tabSementesBindingSource;
this.EspecieComboBoxColumn.DisplayMember = "Semente";
}
else
{
this.tabSementesTableAdapter.Fill(this.sascrDataSet.tabSementes);
this.EspecieComboBoxColumn.DataSource = this.tabSementesBindingSource;
this.EspecieComboBoxColumn.DisplayMember = "Semente";
}
}
Thanks in advance,
JC Carmo
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I need help using windows hooks. Specifically, I want to hook the actions in a program I did not write. In testing, I set up a program that displays its ThreadID. I then try to install a Hook on that ID but it does not work.
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Hi,
Is it impossible to embedd resources into other namespaces than root? The problem is that I cannot find my resourses from classes that do not belong to the default namespace. Please help.
Thanks.
Magnus
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Uh, change the filename form SomeFile.txt to SomeNamespace.SomeFile.txt? That's the way i always do it...
"..Commit yourself to quality from day one..it's better to do nothing at all than to do something badly.."
-- Mark McCormick
|| Fold With Us! || Pensieve || VG.Net ||
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Thanks Marc!
But...then I can't put the resources in subfolders (in Solution Explorer), since the resource name gets wrong, i.e., <subfolder_name>.<namespace.original_filename>, with the namespace after the subfolder name. E.g., then I can't access the resource with
bmp = new Bitmap(this.GetType(), filename);
which otherwise would be a convenient and natural way.
Well, maybe I have to live with this, but I think it's strange that you can't assign resources to namespaces in the same way as classes. I mean, it's all about having structure and order in your work.
Magnus - Javaman
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Huh, i don't get it. The folder a file is in has nothing to do with the name of a file as a resource, just like code files. Something can be in a folder a\b\c\d\e\img.bmp, but as a resource it's still just img.bmp.
"..Commit yourself to quality from day one..it's better to do nothing at all than to do something badly.."
-- Mark McCormick
|| Fold With Us! || Pensieve || VG.Net ||
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i've created a custom control for my application made by a no border form with a label and an imagebox inside.
I've a very long list of these controls to show so i need to add at my application a VScrollbar.
How can i scroll these custom controls pixel for pixel?
Do i've to create all of these or create and deleting just what it is showed everytime i scroll?
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1>How do we read metadata of various file formats using c#....
2> Like i want to read from an Mp3 file the details of artist,album etc
3> from an word file the author,etc etc
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1) You need a description of the file format, one good source is here. You can then use a StreamReader, BinaryReader or other .NET classes to read the data you want
2) The ID3 tag version 1 can be easily read by moving the file pointer to END-128 bytes and then read the 128 bytes. If the first 3 bytes are "TAG", then there is a ID3V1 tag. The ID3V2 tag more complex though. You can use a StreamReader for this purpose.
3) see 1) 
regards
modified 12-Sep-18 21:01pm.
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Hi all
I have main form and this form mdi container and I add another form to customize controls colors in the main form
How can I send new colors to main form????
Thanks for help
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To get a reference to your parent use the following code:
((ParentName)this.MdiParent) where ParentName is the class name of the Mdi Parent.
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and how can i call the controll it self, and if it possible to call control without being public static????
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public static void Detect Edges(Bitmap original, ref Bitmap modified, Color c, int noise)<br />
{<br />
Graphics g = Graphics.FromImage(original);<br />
for(Int32 x = 0; x < original.Width; x++)<br />
{<br />
for(Int32 y = 0; y < original.Height; y++)<br />
{<br />
if(x > 2 && y > 2)<br />
{<br />
try<br />
{<br />
Color current = modified.GetPixel(x , y);<br />
Color right = modified.GetPixel(x + 1, y);<br />
Color left = modified.GetPixel(x - 1, y);<br />
<br />
int total Current = current.R + current.G + current.B;<br />
int total Right = right.R + right.G + right.B;<br />
int total Left = left.R + left.G + left.B;<br />
<br />
if(total Current > (total Left + noise) || total Current > (total Right + noise))<br />
{<br />
modified.SetPixel(x - 1, y, Color.White);
}<br />
else if(total Current > (total Right + noise))<br />
{<br />
modified.SetPixel(x + 1, y, Color.White);
}<br />
else<br />
modified.SetPixel(x, y, Color.Black);
<br />
Color upon = modified.GetPixel(x, y - 1);<br />
Color down One = modified.GetPixel(x, y + 1);<br />
<br />
int totalUpOne = upOne.R + upOne.G + upOne.B;<br />
int totalDownOne = downOne.R + downOne.G + downOne.B; <br />
<br />
if(totalUpOne > (total Current + noise)) <br />
{<br />
modified.SetPixel(x, y - 1, Color.White);<br />
}<br />
else if(totalDownOne > (total Current + noise))<br />
{<br />
modified.SetPixel(x, y + 1, Color.White);<br />
}<br />
else<br />
modified.SetPixel(x, y, Color.Black); <br />
<br />
<br />
<br />
<br />
Color uplift = modified.GetPixel(x - 1, y - 1);<br />
Color downright = modified.GetPixel(x + 1, y + 1);<br />
<br />
int totalUpLeft = upLeft.R + upLeft.G + upLeft.B;<br />
int totalDownRight = downRight.R + downRight.G + downRight.B;<br />
if(totalUpLeft > (total Current + noise))<br />
{<br />
modified.SetPixel(x - 1, y - 1, Color.White);<br />
}<br />
else if(totalDownRight > (total Current + noise))<br />
{<br />
modified.SetPixel(x + 1, y + 1, Color.White);<br />
}<br />
else<br />
modified.SetPixel(x, y, Color.Black); <br />
<br />
Color upright = modified.GetPixel(x + 1, y - 1);<br />
Color down Left = modified.GetPixel(x - 1, y + 1);<br />
<br />
int totalupRight = upRight.R + upRight.G + upRight.B;<br />
int totalDownLeft = downLeft.R + downLeft.G + downLeft.B;<br />
if(totalupRight > (total Current + noise))<br />
{<br />
modified.SetPixel(x + 1, y - 1, Color.White);<br />
}<br />
else if(totalDownRight > (total Current + noise))<br />
{<br />
modified.SetPixel(x - 1, y + 1, Color.White);<br />
}<br />
else<br />
modified.SetPixel(x, y, Color.Black); <br />
}<br />
catch(System.ArgumentException)<br />
{<br />
<br />
}<br />
}<br />
}<br />
}<br />
<br />
<br />
}
in this method, there are four arguments
1- input picture
2- output picture (that is modified)
3- color
4-noise
this method making edge detection for the face
i want to passing a picture to this method and having the modified picture,.........how can this task accomplished
i will be grateful if the answer be in code
thanks to u in advance
haitham
-- modified at 7:49 Sunday 19th February, 2006
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So you have a method, and you can't even figure out how to call it? Don't you think that face recognition might be something that is far beyond your current skill level?
The method that you are showing is not possible to call anyway. A method name can not contain a space character.
---
b { font-weight: normal; }
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the problem is how can i handle the modified picture but not in calling the method
2and the space u mentioned is here(fault for any reason) but i am sure that it wasn't in the code
haitham
-- modified at 11:28 Sunday 19th February, 2006
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In what way is there a problem with handling the modified picture?
---
b { font-weight: normal; }
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This is going to be horribly slow. You should read my image processing articles to see how you should be accessing the bits of your image.
eng:haitham wrote: i want to passing a picture to this method and having the modified picture,.........how can this task accomplished
i will be grateful if the answer be in code
Your question does not make sense - what do you want ? Why are you passing in a ref Bitmap and returning void, wouldn't returning the bitmap be easier ?
Christian Graus - Microsoft MVP - C++
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eng:haitham wrote: this method making edge detection for the face
Are you following a specific algorithim? If not I am not sure your approach to doing it by detecting edges will be a feasible approach[versus using it as a stepping stone]. From your previous post its not clear if your trying to match faces or detect them. One method you might want to look at is eigenfaces. Here is a paper about it if you don't mind the math[^] It should come out to about a page of matlab code.
The Quran's Rational Arguments (Audio)
Background on Prophet Muhammad (in progress)
"They are MUSLIM. It does not matter how you split it up: all msulims (so they say) see every other muslim as a brother, regardless of origin or nationality." -legalAlien. Alhamdullah for the blessing of Islam
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first i would like to thank u about ur help and i want to tell u that i changed the algorithm to that code
public static void DetectSkin(Bitmap original, ref Bitmap modified)<br />
{<br />
Graphics g = Graphics.FromImage(original);<br />
ArrayList points = new ArrayList();<br />
for(Int32 x = 0; x < original.Width; x++)<br />
{<br />
for(Int32 y = 0; y < original.Height; y++)<br />
{<br />
<br />
<br />
Color c = modified.GetPixel(x, y);<br />
<br />
double I = (Math.Log(c.R) + Math.Log(c.B) + Math.Log(c.G)) / 3;<br />
double Rg = Math.Log(c.R) - Math.Log(c.G);<br />
double By = Math.Log(c.B) - (Math.Log(c.G) + Math.Log(c.R)) / 2;<br />
double hue = Math.Atan2(Rg, By) * (180 / Math.PI);<br />
<br />
<br />
<br />
<br />
if (I <= 5 && (hue >= 4 && hue <= 255))<br />
{<br />
points.Add(new Point(x, y));<br />
} <br />
else<br />
{<br />
modified.SetPixel(x, y, Color.Black);<br />
}<br />
<br />
<br />
}<br />
}<br />
}
but the output was not good (i.e the modified picture has black regions from the light)
do u have a solution to prevent this regions but plz i don't want the solution be in the environment i want the solution in code ...if u know any article regarding this problem plz tell me
thanks to u in advance
haitham
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Hi, Has anyone experienced this problem?
by VS2005 C#, i had made class library project contains custom control called "DynamicPanel" inherited from System.Windows.Forms.Panel, this "DynamicPanel" contains some child controls ..
now in my WindowsApplicationProject --> Form1 i'm Draging "DynamicPanel" from the toolbox and all properties was found in PropertyGrid ..
my problem is: i want to be able to access the properties of any of the child controls in "DynamicPanel" by selecting them ( by clicking on them ) in design time. how can i do that?
I would appreciate your help ...
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How To change a user's group or account type in c# (or command line)?
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In Visual Stdio 2005, the "WebBrowser" control. How can i get the url of user
clicked?
void CurrentBrowser_NewWindow(object sender, CancelEventArgs e)
{
e.Cancel = true;
//i want to get the url of user clicked to open the web in
//my own browser
string url = ???
this.CurrentBrowser.Navigate( url )
}
THANK YOU
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Hello,
Is it possible to get a progress value of any method in general which can be used in progresbar control ? I mean, I have some method which takes long time and in the mean time method is being executed, I want to show the user about the percentage of done work ( of that method ).
Is it a solution if i think about using background worker if in these cases ? If so, then how do a background worker know how much work is still left before it finishes it's work ?
thanks and regards
Emran
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