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Can't be done. Every file can be copied and anything you put on the screen can be captured by any decent screen capture prog.
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Dave Kreskowiak wrote: anything you put on the screen can be captured
For some reason, I have trouble capturing frames from video that plays on my computer. I wonder if that could be utilized to prevent a screen capture of an image. I think it has something to do with hardware acceleration, though it may be a quirk of my video card.
Dave Kreskowiak wrote: Every file can be copied
Embedding them and encrypting them could make it at least difficult to copy files.
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In your video case it might be because the video player is using DirectX. There are programs out there that can grab DirectX output images. You just need to do a search on that. You may want to take a look at this article: Various methods for capturing the screen[^]
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loyal ginger is called: loyal ginger
Prejudice 
(watch the whole thing, as it's not what it seems when it starts)
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PrtScrn hes problem capturing DirectX video as well as otehr windows that use transparency. PrtScrn sucks but is easily replaced by other screen capturing apps that do a much better job and don't have the limitations of PrtScrn.
aspdotnetdev wrote: Embedding them and encrypting them could make it at least difficult to copy files.
Copying the files is easy. Decrypting the data is harder.
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Dave Kreskowiak wrote: Copying the files is easy. Decrypting the data is harder.
Lol, true.
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aspdotnetdev wrote: have trouble capturing frames from video that plays on my computer
Yeah that'll be the hardware acceleration, what windows actually puts up is some predefined overlay colour and the graphics card graciously fills this colour in with the video as it passes through. So when you take a screen capture you just capture a dark purple block.
If you find what the overlay colour is you can fill a block of it in inside ms paint, and watch any currently playing videos on it.
My current favourite word is: Smooth!
-SK Genius
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SK Genius wrote: If you find what the overlay colour is you can fill a block of it in inside ms paint, and watch any currently playing videos on it.
I always wondered why it did that. Thanks for the info!
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How to get selected item for DropDownList .And this DropDownList is inside GridView.
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"In the DropDownList Tasks menu, choose Edit DataBindings.
The SelectedValue property of the DropDownList control is selected in the DataBindings dialog box."
See here for a walkthrough.
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please clarity more.. and read the question.
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SqlConnection con1 = new SqlConnection();
con1.ConnectionString = ConfigurationManager.ConnectionStrings["Connectionstring"].ToString();
string sql1 = "select " + colu + " from " + tbl + " where " + cond1 + " ='" + value1 + "' and " + cond2 + " = " + value2 + "";
SqlCommand cmd1 = new SqlCommand(sql1, con1);
con1.Open();
SqlDataReader dr = cmd1.ExecuteReader();
while (dr.Read())
{
return dr["ZoneCode"].ToString();
}
con1.Close();
Error:
Compiler Error Message: CS0161: 'Adv.ReturnString(string, string, string, string, string, string)': not all code paths return a value
Line 51: public string ReturnString(string tbl, string colu, string cond1, string value1, string cond2, string value2)
p
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Remove the return from inside the while loop and place it outside.
Return a collection of ZoneCodes instead of doing what you have done above.
<pre>SqlConnection con1 = new SqlConnection();
con1.ConnectionString = ConfigurationManager.ConnectionStrings["Connectionstring"].ToString();
string sql1 = "select " + colu + " from " + tbl + " where " + cond1 + " ='" + value1 + "' and " + cond2 + " = " + value2 + "";
SqlCommand cmd1 = new SqlCommand(sql1, con1);
con1.Open();
SqlDataReader dr = cmd1.ExecuteReader();
List<string> objList = new List<string>();
while (dr.Read())
{
objList.Add(dr["ZoneCode"].ToString(););
}
return objList;
con1.Close();</pre>
You method signature will be
<pre>public List<string> ReturnString(string tbl, string colu, string cond1, string value1, string cond2, string value2)</pre>
Sorry. I cannot include this code in the <pre> tags. The generics part is getting messed up.
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Compiler Error Message: CS0246: The type or namespace name 'List' could not be found (are you missing a using directive or an assembly reference?)
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Abdul-Rhman Alsri wrote: Compiler Error Message: CS0246: The type or namespace name 'List' could not be found (are you missing a using directive or an assembly reference?)
You need to include the Systems.Collection.Generic namespace.
modified on Sunday, May 2, 2010 2:43 AM
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A slight correction to this code moves the line con1.Close before the return - it's unreachable code, but you could always set ExecuteReader with the parameter CommandBehavior.CloseConnection to shut the connection automatically. I'd also suggest wrapping the code in using blocks to trigger disposal of the objects.
using (SqlConnection con1 = new SqlConnection())
{
con1.ConnectionString = ConfigurationManager.ConnectionStrings["Connectionstring"].ToString();
string sql1 = "select " + colu + " from " + tbl + " where " + cond1 + " ='" + value1 + "' and " + cond2 + " = " + value2 + "";
using (SqlCommand cmd1 = new SqlCommand(sql1, con1))
{
con1.Open();
using (SqlDataReader dr = cmd1.ExecuteReader())
{
List<string> objList = new List<string>();
while (dr.Read())
{
objList.Add(dr["ZoneCode"].ToString(););
}
return objList;
}
}
}
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Thanks - I completely missed the close() statement.
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No problems. It's the joy of coding directly in the html textbox. 
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Pete O'Hanlon wrote: No problems. It's the joy of coding directly in the html textbox
I messed up the "dry run".
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List<string> ZoneCode = ReturnZoneCode("select ZoneCode from AdZone where ID = 20 and AccountID=530");
TextBox1.Text = Convert.ToString(ZoneCode.ToString());
In the code above I called the function(Note: I edited the signature) and I want to bind the returned List<string> into a textbox.
Problem what I have that the Textbox is not bounded the the value returned from the call, but it had the following:
"System.Collections.Generic.List`1[System.String]"
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That's because ToString returns this type of information on a list. If you want to display the values, you need to actually bind to an individual item.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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Well, suppose you wanted to display a list of all of the items in a textbox, you could use:
private void BindZones(List<string> zones)
{
StringBuilder sb = new StringBuilder();
foreach (string item in zones)
{
sb.AppendFormat("{0}{1}", item, Environment.NewLine);
}
TextBox1.Text = sb.ToString();
}To be honest though - you would be better off displaying this in a ListBox rather than a Textbox.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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I got a null value.
please help me to return a string and not
List<string>
I'd like to change to the previous one...
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