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Thanks alot! 
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I have an HTML file in a local directory which will have an a tag
I want to remove the checked part from the above tag & save the file back from my c# desktop application so that whoever accesses the html will not see the checkbox checked by default.
I dont want to use 3rd part parsers like Html Agility Pack. I have been struggling with Microsoft.mshtml & DOM in loading the HTML, getting the Tag by Id. 
Appreciate your help.
Thanks!!
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Try loading it into a System.XML.XMLDocument. You should be able to find the tag using SelectSingleNode, update the node and save the XMLDocument back to the FileSystem.
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had tried to load using XMLDoc but it fails to load because of html xml diffrences ..
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Are you creating the HTML in the first place? It is certainly possible to make HTML pages that are valid XML. Start with checked="checked". All attributes should have quoted values.
Check out DTDs[^] and the W3 Validator[^]
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As you found you can't treat it as XML and use an XML parser. Though it is brute force, the best method may be to simple read the contents into a string and use string.replace.
I know the language. I've read a book. - _Madmatt
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All .. thanks for the replies .. it did help .. While XML doc didnt work .. string replace didnt sound very reliable (at least in my case). So had to look back at Html Agilty pack (though in 1st place I didnt want to use a parser .. a 3rd party one) which sounded the best bet (also since its from codeplex). That was quite easy to use.
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I am sending game score to the web service and saving it there to xml file by using the following code:
XmlTextWriter myWriter = new XmlTextWriter("highScores.xml", null);
myWriter.WriteStartDocument();
myWriter.WriteStartElement("highestScore");
myWriter.WriteValue(score);
myWriter.WriteEndElement();
myWriter.WriteEndDocument();
myWriter.Close();
I want to add to this function a condition to save the score only if it's higher than the score which already is in the xml.
I was also trying to make another function to get this highest score from the xml, and return it to the Client.
My problem is that I have no idea how to get this int (as an int) from the xml, I've tried few times on different ways bu still have no idea how to do this. Please help.
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when you read a value from xml you get a string.
to convert it to int use int.TryParse method.
life is study!!!
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Parse method worked. Thanks.
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You should be clearer in what you are trying to say.
0) Shouldn't you already know whether or not the score is the high score?
1) Why not store the date and time as well as the score?
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i want delete image file.
very well insert image file to listbox.
but, does'nt delete image file ,
plz, take me a error,,
---
c#, wpf, .net3.5
/....
source code
attched project files,
source file download
//////////error code////
//image insert to listbox///
private void button1_Click(object sender, RoutedEventArgs e)
{
savepath = System.Environment.CurrentDirectory.ToString();
foreach (string f in Directory.GetFiles(savepath + "/image", "*.jpg"))
{
BitmapImage my;
my= new BitmapImage();
my.BeginInit();
my.CacheOption = BitmapCacheOption.OnLoad;
my.UriSource = new Uri(f, UriKind.RelativeOrAbsolute);
my.EndInit();
listBox1.Items.Add(my);
}
}
/////////delete image file ///
private void button2_Click(object sender, RoutedEventArgs e)
{
string makestr1, item1;
item1 = listBox1.Items[0].ToString();
makestr1 = item1.Substring(8, item1.Length - 8);
listBox1.Items.Remove(listBox1.Items[0]);
if (System.IO.File.Exists(makestr1))
{
System.IO.File.Delete(makestr1); //<--error point
}
else
MessageBox.Show("Nothingfile");
}
//error message..
modified on Tuesday, May 18, 2010 7:31 AM
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I understand that English isn't your native language, but your question is rather difficult to understand. This is not helped by the use of txtspk abreviations such as Plz instead of please!
Please provide the specific code where you are attepting to delete the file along with any exceptions you are receiving. - now included 
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier. (Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
modified on Tuesday, May 18, 2010 8:09 AM
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He did supply the entire code in a zip file, I think... 
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He edited the post to include it - fair enough
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier. (Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
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If you have loaded an image from a file, the file will be locked as long as your image hasn't been disposed of. Maybe that is your trouble, I can't be bothered to download and investigate your code...
Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]
I only read formatted code with indentation, so please use PRE tags for code snippets.
I'm not participating in frackin' Q&A, so if you want my opinion, ask away in a real forum (or on my profile page).
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//image insert to listbox///
private void button1_Click(object sender, RoutedEventArgs e)
{
savepath = System.Environment.CurrentDirectory.ToString();
foreach (string f in Directory.GetFiles(savepath + "/image", "*.jpg"))
{
BitmapImage my;
my= new BitmapImage();
my.BeginInit();
my.CacheOption = BitmapCacheOption.OnLoad;
my.UriSource = new Uri(f, UriKind.RelativeOrAbsolute);
my.EndInit();
listBox1.Items.Add(my);
}
}
/////////delete image file ///
private void button2_Click(object sender, RoutedEventArgs e)
{
string makestr1, item1;
item1 = listBox1.Items[0].ToString();
makestr1 = item1.Substring(8, item1.Length - 8);
listBox1.Items.Remove(listBox1.Items[0]);
if (System.IO.File.Exists(makestr1))
{
System.IO.File.Delete(makestr1); //<--error point
}
else
MessageBox.Show("Nothingfile");
}
//error message..
do not access ! becouse using of other process
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As Luc has suggested the images are still in use by the listbox. You can remove them from the listbox an mark them for deletions by some background process.
I know the language. I've read a book. - _Madmatt
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As they've said your program still has a lock on the files. I would guess that when the image is loaded into the BitmapImage, it locks the file. See this blog: “Memory leak” with BitmapImage and MemoryStream[^]
It doesn't look like it has a dispose method, so you're best bet is to do what others have suggested and use a stream to read it in yourself.
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read the images with streams - no lock is set on the file.
btw. I'm not sure you want to use 'System.Environment.CurrentDirectory' as it is relative to the point of application launch (shortcuts) and may change easily.. if you meant the application directory use Application.StartupPath
life is study!!!
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Hi,
Im using windows form combobox, binding the value using Binding object,after retreving from the database,im using Combobox.selectedvalue="2"; after the form load completion the selected value is not get retaining. im using combobox style as dropdown.
Regards
Kanna
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Try to set this Combobox.selectedvalue="2"; value (through code) in the loaded event of the form.
My signature "sucks" today
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I assume you try setting the value after you bind the control to your data..
if the value is bound to int datacolumn then drop the " - use integers..
also you may try setting ComboBox.BindingContext property to parenting Form.BindingContext.
ex. cmb.BindingContext = this.BindingContext;
life is study!!!
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Hi,
I have the picture box in which i draw the rectangle (code is below) and inside that rectangle i typed some name using label box. Now i try to store these. How can i do this using c#
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
string file = "";
OpenFD.FileName = "";
OpenFD.Title = "open image";
OpenFD.InitialDirectory = "C";
OpenFD.Filter = "JPEG|*.jpg|Bmp|*.bmp|All Files|*.*.*";
if (OpenFD.ShowDialog() == DialogResult.OK)
{
file = OpenFD.FileName;
pictureBox1.Image = Image.FromFile(file);
sz = pictureBox1.Size;
a=sz.Width; b= sz.Height;
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
switch (e.Button)
{
case MouseButtons.Left:
{
rect = new Rectangle(rect.Left, rect.Top, e.X - rect.Left, e.Y - rect.Top);
this.Invalidate();
Application.DoEvents();
break;
}
}
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
rect = new Rectangle(e.X, e.Y, 0, 0);
this.Invalidate();
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
using (Pen pen = new Pen(Color.Red, 2)) e.Graphics.DrawRectangle(pen, rect);
if (label1.TextAlign == ContentAlignment.TopLeft)
{
e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), label1.Bounds);
}
else if (label1.TextAlign == ContentAlignment.TopCenter)
{
SizeF size = e.Graphics.MeasureString(label1.Text, label1.Font);
float left = ((float)this.Width + label1.Left) / 2 - size.Width / 2;
RectangleF rect1 = new RectangleF(left, (float)label1.Top, size.Width, label1.Height);
e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), rect1);
}
else
{
SizeF size = e.Graphics.MeasureString(label1.Text, label1.Font);
float left = (float)label1.Width - size.Width + label1.Left;
RectangleF rect1 = new RectangleF(left, (float)label1.Top, size.Width, label1.Height);
e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), rect1);
}
label1.Top = rect.Top; label1.Left = rect.Left; label1.Width = rect.Width; label1.Height = rect.Height;
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveFileDialog SaveFD1 = new SaveFileDialog();
SaveFD1.FileName = "";
SaveFD1.InitialDirectory = "C";
SaveFD1.Title = "save file Name";
SaveFD1.Filter= "JPG|*.jpg|Bmp|*.bmp";
if (SaveFD1.ShowDialog() != DialogResult.Cancel)
{
System.IO.Stream filename = (System.IO.FileStream)SaveFD1.OpenFile();
if (SaveFD1.Filter == "JPG")
pictureBox1.Image.Save(SaveFD1.FileName);
System.Drawing.Imaging.ImageFormat.Jpeg);
else if (SaveFD1.Filter == "Bmp")
{
pictureBox1.Image.Save(filename, System.Drawing.Imaging.ImageFormat.Bmp);
}
filename.Close();
}
}
On using the above code i just load and saved the image (without drawing any rectangle). Now tried to open the saved image but its shows the error as "Out of memory".
Please Can any one tell where i am going wrong....
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You're going to have some problems with the method you're using if you want to save it.
The best thing that I can suggest to do is to create an intermediate Bitmap to draw on and set your PictureBox1.Image value to that Bitmap. Then, you can save it pretty easily. For example:
Rectangle rect = New Rectangle(0,0,0,0);
Bitmap myBitmap;
private void PictureBox_MouseDown(object sender, MouseEventArgs e)
{
if (myBitmap == null)
{
myBitmap = New Bitmap(PictureBox1.Width, PictureBox1.Height, PictureBox1.CreateGraphics());
PictureBox1.Image = myBitmap;
}
rect = New Rectangle(e.X, e.Y, 0, 0);
PictureBox1.Invalidate();
}
private void PictureBox_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
rect = New Rectangle(rect.Left, rect.Top, e.X - rect.Left, e.Y - rect.Top);
PictureBox1.Invalidate();
}
}
private void PictureBox_Paint(object sender, PaintEventArgs e)
{
if (myBitmap == null) { return; }
using (Pen pen = New Pen(Color.Red, 2))
{
using (Graphics g = Graphics.FromImage(myBitmap))
{
g.Clear(Color.White);
g.DrawRectangle(pen, rect);
}
}
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
if (myBitmap != null)
{
myBitmap.Save("D:\\Temp\\Bitmapsave.bmp", System.Drawing.Imaging.ImageFormat.Bmp);
}
}
It's basically the same thing you've done, except instead of drawing on the bitmap instead of directly on the PaintBox.
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