Retrieve items from the last index on Dictionary. - C# Discussion Boards

Re: How to detect if a user leaves a control while holding a Mousebutton down? [modified]

Megidolaon24-Mar-09 21:48

24-Mar-09 21:48

I thought I had it by making the FlowLayoutPanel slightly larger then the PictureBoxes covering it
But if you hold the mouse button down none of the events get fired, they only fire when you don't press the mouse button.
That's is useless to me.

Colision detection is kinda out of the question, the mouse coordinates are different from the control sizes (events get fired at the wrong time) and I can't debug it because during debug the mouse coordinates still change every time I move the mouse.

An IsChecked property wouldn't really help me.
I need to detect if the user moves away from the PictureBoxes while holding the mouse button down

modified on Monday, April 6, 2009 3:06 AM

.Net error.....

S K Y23-Mar-09 22:40

S K Y

23-Mar-09 22:40

to run my application i need to install .net but when i try to install it telling invalid Win32...may i know y??? and solution?

A S E L A

Re: .Net error.....

Eddy Vluggen23-Mar-09 23:20

Eddy Vluggen

23-Mar-09 23:20

- What version of .NET?
- What OS-version?
- Have you run a virus-checker on your installation-package?

Download .NET 2.0 here[^].

I are troll Smile | :)

excel sheet

Mangesh Tomar23-Mar-09 22:37

Mangesh Tomar

23-Mar-09 22:37

hi
Here is my code in this i use a file dialog box from which i open the excel file but here is one problem i read only one sheet in datagride view when i select some another file then it shows the error PLZ CHECK THE FILE NAME OR FILE IS NOT EXIT NEED A Help

private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog FD = new OpenFileDialog();
FD.Filter = "Excel|*.xls";
if (FD.ShowDialog() == DialogResult.OK)
{
textBox1.Text = " " + FD.FileName;
}
string filename = textBox1.Text;
String connectionString =
"Provider=Microsoft.Jet.OLEDB.4.0;" +
"Data Source=" + filename + ";" +
"Extended Properties=Excel 8.0;";
OleDbConnection connection = new OleDbConnection(connectionString);
connection.Open();
OleDbCommand selectCommand = new OleDbCommand("SELECT * FROM [xyz$]", connection);
OleDbDataAdapter dataAdapter = new OleDbDataAdapter();
dataAdapter.SelectCommand = selectCommand;
DataSet dataSet = new DataSet();

dataAdapter.Fill(dataSet);
System.Data.DataTable dataTable = dataSet.Tables[0];
dataGridView1.DataSource = dataSet.Tables[0];
// textBox1.Text = "";
MessageBox.Show(dataGridView1.RowCount.ToString());
connection.Close();
}

Re: excel sheet

Nagy Vilmos23-Mar-09 23:01

Nagy Vilmos

23-Mar-09 23:01

<repbot engaged=true>
1) Please use punctation, it helps make sense of gibberish.
2) DO NOT SHOUT UNLESS YOU WANT TO BE FLAMED!
3) Spelling helps. It helps a lot.
4) Format your code, see the buttons on this page for <code></code> in line or

<pre>blocks of code</pre>

Compare:

if (FD.ShowDialog() == DialogResult.OK)
{
textBox1.Text = " " + FD.FileName;
}

and

if (FD.ShowDialog() == DialogResult.OK)
{
   textBox1.Text = " " + FD.FileName;
}

</repbot>

Panic, Chaos, Destruction.
My work here is done.

PersiaDevelopers.com

Majid Shahabfar23-Mar-09 22:13

Majid Shahabfar

23-Mar-09 22:13

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Re: PersiaDevelopers.com

Eddy Vluggen23-Mar-09 22:35

Eddy Vluggen

23-Mar-09 22:35

Stop crossposting the ads, please.

I are troll Smile | :)

Retrieve items from the last index on Dictionary.

CodingLover23-Mar-09 21:59

CodingLover

23-Mar-09 21:59

Hi all,

I've added value pair, int and string, in a Dictionary. Now I want to take pairs from the last. int value represent the index of a string and string value represent the value to insert into the original string.

I've try this.

            <br />
foreach (KeyValuePair<int,> pair in diction)<br />
{<br />
    str = str.Insert(pair.Key, pair.Value); // 'str' is he string I want to added <br />
}

This insert items in wrong index once the first item index is added in the correct place. So I want to added them from the last item. But I'm messup with that how to access the last element. Can someone help me to do this.

Thanks Smile | :)

I appreciate your help all the time...
CodingLover Smile | :)

Re: Retrieve items from the last index on Dictionary.

12Code23-Mar-09 22:13

12Code

23-Mar-09 22:13

Dictionary<TKey, TValue>.Last Method

8.Kelvin()
{   
  while (!(the machine can program itself))
     Wont_stop_coding = true;
}

Re: Retrieve items from the last index on Dictionary.

CodingLover23-Mar-09 22:19

CodingLover

23-Mar-09 22:19

Thanks for the replay.

Can you explain it bit more with my example, please?

I appreciate your help all the time...
CodingLover Smile | :)

Re: Retrieve items from the last index on Dictionary.

12Code23-Mar-09 23:42

12Code

23-Mar-09 23:42

      Dictionary<int, string> diction = new Dictionary<int, string>();<br />
<br />
            diction.Add(1, "first");<br />
            diction.Add(2, "second");<br />
            diction.Add(3, "last");<br />
<br />
            Dictionary<int,string>.KeyCollection keys = diction.Keys;<br />
            int lastKey = keys.Last();<br />
<br />
            Dictionary<int,string>.ValueCollection values = diction.Values;<br />
            string lastValue = values.Last();   <br />
         <br />
            MessageBox.Show("lastKey = " +lastKey + " lastValue = " + lastValue);

8.Kelvin()
{   
  while (!(the machine can program itself))
     Wont_stop_coding = true;
}

Re: Retrieve items from the last index on Dictionary.

CodingLover23-Mar-09 23:53

CodingLover

23-Mar-09 23:53

But now I've a little mess here. I want to iterate whole dictionary, from the last to first pair. In this way, I've to take the last value and to find the next need to remove it, right?

I appreciate your help all the time...
CodingLover Smile | :)

Re: Retrieve items from the last index on Dictionary.

12Code24-Mar-09 0:07

12Code

24-Mar-09 0:07

string allstr = "";
for (int count = diction.Count; count > 0; count--)
{
    allstr += diction.ElementAt(count-1).Value;
}
MessageBox.Show("allstr = " + allstr);

8.Kelvin()
{   
  while (!(the machine can program itself))
     Wont_stop_coding = true;
}

Re: Retrieve items from the last index on Dictionary.

CodingLover24-Mar-09 0:41

CodingLover

24-Mar-09 0:41

I got this error message.

'System.Collections.Generic.Dictionary<int,string>' does not contain a definition for 'ElementAt'

Frown | :(

I appreciate your help all the time...
CodingLover Smile | :)

Re: Retrieve items from the last index on Dictionary.

12Code24-Mar-09 17:03

12Code

24-Mar-09 17:03

CodingLover wrote:
I got this error message.

'System.Collections.Generic.Dictionary<int,string>' does not contain a definition for 'ElementAt'

Add
using System.Linq;
will do.

8.Kelvin()
{   
  while (!(the machine can program itself))
     Wont_stop_coding = true;
}

Re: Retrieve items from the last index on Dictionary.

12Code23-Mar-09 23:53

12Code

23-Mar-09 23:53

or just use
diction.Last().Key
and
diction.Last().Value
will do.

8.Kelvin()
{   
  while (!(the machine can program itself))
     Wont_stop_coding = true;
}

Ritch text box

Sajjad Leo23-Mar-09 21:13

Sajjad Leo

23-Mar-09 21:13

Hi,

I am using rich text box to display data from database but i want to display data from from a an other world which is on the middle or some where in database like i have data,

Please remember to search our articles, the forums, MSDN and Google before posting your question.

Now i want to start the first letter in rich text box like MSDN not from Please

Kindly tell me what i should do please do replay.

Thanx.

Re: Ritch text box

Deresen23-Mar-09 22:30

Deresen

23-Mar-09 22:30

I don't really understand the question, you would like to get some random words which will be placed inside your rich textbox?

I'd do that something like this:

String s = "Please remember to search our articles, the forums, MSDN and Google before posting your question.";
String[] words = s.split(' ');
//or if you would like to remove also comma's and dots, do it like this:
//char[] cc = {' ', '.', ',', '!'};
//String[] words = s.split(cc);
String endString = String.Format("{0} not from {2}", random.Next(words.length),random.Next(words.length));

If this isn't what you want, then you should recapulate your question.

Re: Ritch text box

Sajjad Leo25-Mar-09 18:50

Sajjad Leo

25-Mar-09 18:50

Dear,

Thanks for your replay but it is not what i am saying i am just saying that if i have some data like A to Z but when data fill in rich text box the starting letter must be
F in database of A to Z not started from word A.

I think you will understand my question now.

waiting for your replay.

Re: Ritch text box

Deresen25-Mar-09 22:13

Deresen

25-Mar-09 22:13

I really don't get your question.
What is the text in the database? And what is the expected output?
Like you have this in the database: 'a b c d e f g h' and the output is 'f g h' or something.
And where do you have the problem? Splitting the data to whichever you want or getting data out of the database?

[Message Deleted]

w.hooper23-Mar-09 20:56

w.hooper

23-Mar-09 20:56

[Message Deleted]

Re: C# I need a windows service that returns values to any application via a DLL interface

King Julien23-Mar-09 22:58

King Julien

23-Mar-09 22:58

Try using .net remoting with IPC Channels..... Check this http://downloads.techrepublic.com.com/abstract.aspx?docid=273719[^]

Have a Happy Coding.....

How to change url name in browser using c#?

svt gdwl23-Mar-09 20:46

svt gdwl

23-Mar-09 20:46

Hi, I want to change the url displaying on browser when a file is opened through it. For example,
file:///s3413.pdf/ to http://NewWebapplication.pdf

how it is possible using c#?

Re: How to change url name in browser using c#?

Naruki23-Mar-09 22:01

Naruki

23-Mar-09 22:01

Write a new browser in C# and make it to do something horribly anti-standards as you just described.

Otherwise, it's not gonna happen. It should not happen. Do not so much as think that what you are asking is reasonable.

Now, if you just want to talk about redirection from an actual web site, not your local file system, there are things that can be done. But those don't involve C# either.

Don't let my name fool you. That's my job.

Re: How to change url name in browser using c#?

Spunky Coder23-Mar-09 22:37

Spunky Coder

23-Mar-09 22:37

Well...It can be done...It is known as URL Rewriting Take a look into this URL ReWrite[^]

Or try Google for more articles. Smile | :)

"Don't worry if it doesn't work right. If everything did, you'd be out of a job." (Mosher's Law of Software Engineering)

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