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hello ...
I need to extract the first frame of a given video and convert it to an image .
i'm developing an editor for HTML using C#.
i want to use it when a webbrowser fails to download a video
as follows
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Hi
I am dumping a table's data into xml document using C#. I am getting the data but the problem is that "<" character appears as "& l t ;" (I inserted the empty space intentionally).
Similarly, there are other characters appearing incorrectly.
What should I do to make it appear correctly like "<" . Please advise.
Thanks
Pankaj
-- modified at 17:14 Friday 16th December, 2005
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pankazmittal wrote: that "<" character appears as "<".
pankazmittal wrote: it appear correctly like "<" .
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its actually
"<" character appears as "& l t ;" (remove empty spaces )
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you must be outputing the XML yourself.
System.Xml.XmlDocument
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Where are they appearing incorrectly? If you mean that they are stored that way in the xml file, it's not incorrect, they have to be stored that way.
---
b { font-weight: normal; }
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If I understand you correctly, you have a table like the following:
<table>
<tr>
<td>
Some table data.
</td>
</tr>
</table>and when you put it in the XML document, you get:
<myXml>
</tableData>
<table>
<tr>
<td>
Some table data.
</td>
</tr>
</table>
</tableData>
</myXml>If so, then when you dump it into the XML document, your code (intentionally or not) has replaced the predefined XML entities with their ENTITY counterparts. Five predefined entities exist:- > becomes >
- < becomes <
- " becomes "
- ' becomes '
- & becomes &
Perhaps you can post how you put the table data into the XML document and we can help you avoid these automatic conversions.
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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Thanks for understanding. I am simply pulling the data from table and access it using dataset "dsCC" in following code.
Here is the code I am using:
--------------------Code Starts here-------------------------------
if (dsCC.Tables.Count > 0)
{
dvCC = dsCC.Tables[0].DefaultView ;
if (dvCC.Count > 0)
{
xDoc = new XmlDocument();
XmlElement xElmntRoot;
XmlElement xElmntAccount;
xElmntRoot = xDoc.CreateElement("root");
xDoc.AppendChild(xElmntRoot);
InsertTextNode(xDoc, xElmntRoot, dvCC.Table.Columns[0].ColumnName, Convert.ToString(dvCC[0][0]));
xElmntAccount = xDoc.CreateElement("Accounts"); // xElmntRoot. //xElmntRoot.AppendChild("Accounts");
xElmntRoot.AppendChild(xElmntAccount);
for (int nRowCounter = 0; nRowCounter <= dvCC.Count - 1; nRowCounter++)
{
for (int nColCounter = 1; nColCounter <= dvCC.Table.Columns.Count - 1; nColCounter++)
{
InsertTextNode(xDoc, xElmntAccount, dvCC.Table.Columns[nColCounter].ColumnName, Convert.ToString(dvCC[nRowCounter][nColCounter]));
}
}
sDestinationFileWithPath = HttpContext.Current.Request.ServerVariables["APPL_PHYSICAL_PATH"] + @"ClientConfig.xml";
xDoc.Save(sDestinationFileWithPath);
}
}
private XmlElement InsertTextNode(XmlDocument xDoc,XmlNode xNode ,string strTag, string strText)
{
// Insert a text node a child of xNode.
// Set the tag to be strTag, and the text to be strText. return a pointer to the new node.
XmlNode xNodeTemp;
xNodeTemp = xDoc.CreateElement(strTag);
xNodeTemp.AppendChild(xDoc.CreateTextNode(strText));
xNode.AppendChild(xNodeTemp);
return (XmlElement) (xNodeTemp);
}
--------------------Code Ends-------------------------------
When I open the xml file, the data looks like
<EncryptionType>&lt;![CDATA[etPublicKey]]&gt;</EncryptionType>
-----------------------------
What I want is
<EncryptionType><![CDATA[etPublicKey]]></EncryptionType>
-----------------------------
I hope I am clear now  Thanks
Pankaj
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In InsertTextNode(...), try replacing xNodeTemp.AppendChild(xDoc.CreateTextNode(strText)); with xNodeTemp.AppendChild(xDoc.CreateCDataSection(strText));. Maybe that'll work correctly for you.
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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Playing with the ListView to try to get colored backgrounds.
ListViewItem lviGrossMargin = new ListViewItem(strListViewItem);
lvOptions.Items.Add(lviGrossMargin);
lviGrossMargin.SubItems[0].BackColor = System.Drawing.Color.Wheat;
lviGrossMargin.SubItems[1].BackColor = System.Drawing.Color.SpringGreen;
lviGrossMargin.SubItems[2].BackColor = System.Drawing.Color.YellowGreen; If I set lvOptions.Background, I color the entire background the identified color. But coding as above, I get the same result. Setting SubItems[0] to Wheat sets all SubItems. Setting SubItems[1] or [2] does nothing.
Playing with the SubItems[n].Text does apply the expected text in each column. If I play with ForeColor, same as BackColor occurs. [0] is recognized and applies it to all SubItems. It is only the colors that don't seem to work.
Is there a step I skipped that has to be done before manipulating colors or is it a feature that doesn't work correctly in VS Studio 2003?
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That was the key. Thank you very much! 
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Hi,
I have a datagrid with a datatable, and am using the MouseMove event to make a tooltip pop up whenever the text in the cell is longer than the cell width. This works ok, but there's a problem. When the mouse enters the cell, the cell backcolor turns off-white/beige and the text is highlighted. (This also happens when I just click on a cell to select the row - at least until the I release the mouse button.) I do have a CustomDataTableStyle where I set
ts.BackColor = Color.Black;<br />
ts.ForeColor = Color.LightGray;
ts.SelectionBackColor = Color.Black;<br />
ts.SelectionForeColor = Color.CornflowerBlue;
Is there anything to prevent this from happening, or anything I can add that says that, upon MouseEnter the backcolor is black and the forecolor is cornflowerblue, or any other ideas?
Thanks!!!
Mel
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Hello,
I created a simple Windows service using the code from http://msdn.microsoft.com/msdnmag/issues/05/03/SchedulingASPNETCode/default.aspx[^], I didn't change the code much accept the name of the service.
Installation goes perfect, but when the service is started, it stops right away giving me a message that the Serivce has no work to do so it is stopped.
Can anyone help me in determinig what the problem is here? All I am trying to do is create a simple timer service that will write to a text file at a given interval.
Thanks
Mike
<br />
using System;<br />
using System.Collections;<br />
using System.ComponentModel;<br />
using System.Data;<br />
using System.Diagnostics;<br />
using System.ServiceProcess;<br />
using System.Configuration;<br />
using System.Globalization;<br />
<br />
using System.IO;<br />
<br />
namespace MyWinServices<br />
{<br />
public class InvokeMyWinService : System.ServiceProcess.ServiceBase<br />
{<br />
private System.ComponentModel.Container components = null;<br />
protected System.Timers.Timer timer;<br />
<br />
private double _intervalTest = 0;<br />
<br />
<br />
public static void Main() <br />
{<br />
ServiceBase.Run(new InvokeG6EntWinService());<br />
}<br />
<br />
<br />
public InvokeMyWinService()<br />
{<br />
InitializeComponent();<br />
CanPauseAndContinue = true;<br />
this.ServiceName = "MyWinServices";<br />
<br />
if( ! EventLog.SourceExists("MyWinServiceEventLog"))<br />
{<br />
EventLog.CreateEventSource("MyWinServiceEventLog", "MyWinServiceLog");<br />
}<br />
EventLog.Source = "MyWinServiceEventLog";<br />
EventLog.Log = "MyWinServiceLog";<br />
}<br />
<br />
<br />
private void InitializeComponent()<br />
{<br />
this.timer = new System.Timers.Timer();<br />
((System.ComponentModel.ISupportInitialize)(this.timer)).BeginInit();<br />
this.timer.Enabled = true;<br />
this.timer.Elapsed += new System.Timers.ElapsedEventHandler(this.timer_Elapsed);<br />
this.ServiceName = "MyWinServices";<br />
((System.ComponentModel.ISupportInitialize)(this.timer)).EndInit();<br />
<br />
}<br />
<br />
protected override void Dispose( bool disposing )<br />
{<br />
if( disposing )<br />
{<br />
if (components != null) <br />
{<br />
components.Dispose();<br />
}<br />
}<br />
base.Dispose( disposing );<br />
}<br />
<br />
protected void InitializeTimer()<br />
{<br />
if (timer == null)<br />
{<br />
timer = new System.Timers.Timer();<br />
timer.AutoReset = true;<br />
timer.Interval = ReadAppSettingInterval();<br />
timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);<br />
}<br />
}<br />
private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)<br />
{<br />
RunCommands();<br />
}<br />
<br />
protected void RunCommands()<br />
{<br />
EventLog.WriteEntry(ServiceName + " Service ran ok");<br />
<br />
FileStream fs = new FileStream(@"c:\temp\MyWinServices.txt" , FileMode.OpenOrCreate, FileAccess.Write); <br />
StreamWriter m_streamWriter = new StreamWriter(fs); <br />
m_streamWriter.BaseStream.Seek(0, SeekOrigin.End); <br />
m_streamWriter.WriteLine(" MyWinServices: Doing Job at: " + DateTime.Now + "\n"); <br />
m_streamWriter.WriteLine(" _intervalTest: " + _intervalTest + "\n"); <br />
m_streamWriter.Flush();<br />
m_streamWriter.Close(); <br />
}<br />
<br />
protected double ReadAppSettingInterval()<br />
{<br />
double interval = 600000, tempInterval;
if (ConfigurationSettings.AppSettings != null && <br />
ConfigurationSettings.AppSettings["IntervalMinutes"] != null)<br />
{<br />
string intervalMin;<br />
intervalMin =ConfigurationSettings.AppSettings["IntervalMinutes"];<br />
if (Double.TryParse(intervalMin, NumberStyles.Any,<br />
NumberFormatInfo.InvariantInfo, out tempInterval))<br />
interval = tempInterval * 60000;<br />
}<br />
<br />
_intervalTest = interval;
return interval;<br />
}<br />
<br />
protected override void OnStart(string[] args)<br />
{<br />
EventLog.WriteEntry(ServiceName + " 3 Service started");<br />
InitializeTimer();<br />
timer.Enabled = true; <br />
}<br />
<br />
protected override void OnStop()<br />
{<br />
EventLog.WriteEntry(ServiceName + " Service stopped");<br />
timer.Enabled = false;<br />
}<br />
protected override void OnPause()<br />
{<br />
EventLog.WriteEntry(ServiceName + " Service paused");<br />
timer.Enabled = false;<br />
}<br />
<br />
protected override void OnContinue()<br />
{<br />
EventLog.WriteEntry(ServiceName + " Service continued");<br />
timer.Enabled = true;<br />
}<br />
<br />
<br />
}<br />
}<br />
App.config
<br />
<?xml version="1.0" encoding="utf-8" ?><br />
<configuration><br />
<appSettings><br />
<add key="IntervalMinutes" value="5"/><br />
</appSettings><br />
</configuration><br />
<br />
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Hi!
I'm not going to debug your code but tell you how you can do it yourself.
First of all, insert a call to System.Windows.Forms.MessageBox.Show("Attach a debugger and then press OK"); right at the start of OnStart(). Set a breakpoint immediately after the MessageBox. Compile and replace the new executable.
Then you'll have to allow the service desktop interaction (you can do this via the Services control panel).
If you start the service now, the MessageBox will pop up. Then you can attach your running VS to the process (you'll have to hurry a bit, before the start request for your service times out). Then you can klick OK in your MessageBox and the debugger will stop at the next breakpoint so you can step through the code and find out what goes wrong.
Regards,
mav
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I'm writing an application where I want to register my own URL prefix with the system, so when the link is clicked it will pass the address to my application. Anyone have any idea how to do this in C#? I've been looking for information on it for the past hour and no luck 
Thanks for your time
Peter
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Have you checked out this article?
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
-- modified at 18:27 Friday 16th December, 2005
Sorry, it the caps lock. Changed "THIS ARTICLE" to "this article".
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Thanks for the link. I can now add them, and it will work from the explorer address bar, but is there a way to get it to be recognised by the RichTextBox URL detection? Or does that use it's own list of URL prefixes?
I want it to work on other applications not just mine, so adapting the RichTextBox won't work for this.
Peter
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I don't know. It should do what other application do: check the URL protocol getting used and ask the OS to handle it. For example, after adding the "note" protocol to my system, Firefox would open notepad.exe.
Dies your application accept the entire argument? For example, if you have the string "protocol:mother.of.pearl", then the string "protocol:mother.of.pearl" gets passed to the target application.
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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It works when I enter it in an address bar fine. The problem is I want RichTextBoxes to detect the URL and highlight it as a link. The aim of which is to make it easy to send links through MSN Messenger. At the moment the only thing I can think of is somehow hooking into the RichTextBox for those windows and detecting it myself, but that sounds a bit too complicated than it needs to be.
Personally I can't see why the RichTextBox wouldn't use the registry to get the URLs, it makes a lot more sense than using an internal list, much more dynamic. But it seems to me that they are using an internal list.
Peter
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Ah, now I understand your dilemma. If I have time this weekend, I will try to investigate a solution for you. No promises, of course! <smile />
"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty
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If you have time that would be greatly appreciated. I can't find much, even went as far as to try disassembling the rich edit control to see how it detects URLs, but then I remembered I suck at assembly! 
Peter
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Hello. I've been working with a normal form widget, and after reading the article on Gradient Forms
http://www.codeproject.com/csharp/GradientForms_EasyWay.asp
I would like to morph the existing form without copying and pasting all the code (properties and events) already done.
Is this possible in VisualStudio? How?
Thanks in advance
Zopiro
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can u use an inherited form control and inherit from the gradient form ?
regards,
g00fy
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Hi I’m trying to create my own component under .Net Framework 2.0 in C#. I have a problem on reducing the surface where component can be drop.
In fact I would like to have the exact comportment of a winform : one part of my control would be a design surface like the title bar in a form (non accessible by the designer or other control) and an other part would be the container which add controls and where they can draw themselves.
Is there anybody who can help me?
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