C# Discussion Boards - CodeProject

Muammar©4-Sep-07 1:31

4-Sep-07 1:31

Any idea how to add anything to a full screen video implemented using DirectX SDK??
Say subtitle, slider, a button, any control..

Thanks Rose | [Rose]

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Check for Numeric value

nagendrathecoder4-Sep-07 1:03

nagendrathecoder

4-Sep-07 1:03

Hello friends,

How can i check that a value entered in the TextBox is a numeric value i.e integer or double value?

Thanks,
Nagendra.

Re: Check for Numeric value

originSH4-Sep-07 1:14

originSH

4-Sep-07 1:14

Decimal.TryParse
Int.TryParse

Re: Check for Numeric value

VenkataRamana.Gali4-Sep-07 1:32

VenkataRamana.Gali

4-Sep-07 1:32

System.VisualBasic.IsNumaric(string str) which will returns boolean value

Ramana

Re: Check for Numeric value

originSH4-Sep-07 1:39

originSH

4-Sep-07 1:39

But that means adding the VisualBasic assembly to your projects and makes you feel dirty

*shudders and scrubs to get clean again*

hehe, but seriously thats a good answer Smile | :)

Re: Check for Numeric value

Gopal.S4-Sep-07 2:23

Gopal.S

4-Sep-07 2:23

Hi,

In C# "IsNumeric" method is not available. You can do its manually using "char.IsNumber() or char.IsDigit()" in KeyPress events.

Here is the code snippet:

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if (!char.IsNumber(e.KeyChar))
e.Handled = true;
}

Thanks,

Gopal.S

Re: Check for Numeric value

Pete O'Hanlon4-Sep-07 2:32

Pete O'Hanlon

4-Sep-07 2:32

OK - so you assume here that 42.03 is not a number.

Deja View - the feeling that you've seen this post before.

Re: Check for Numeric value

Gopal.S4-Sep-07 2:59

Gopal.S

4-Sep-07 2:59

Hi,

Thanks for your reply.

I was checked only integer value. You can check "." and other special characters seperatly for double value.

Here is code snippet for double value:

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
TextBox txtBox = sender as TextBox;

if (e.KeyChar == '\b') { return; }

if (Char.IsDigit(e.KeyChar))
{
string amount = txtBox.Text;
int pos = txtBox.Text.IndexOf('.');

if ((pos > 0) & (amount.Length > 10))
{
e.Handled = true;
return;
}

if ((pos == -1) & (amount.Length > 7))
{
e.Handled = true;
return;
}

if ((pos > 0) & (txtBox.SelectionStart > pos))
{
amount = amount.Substring(pos, amount.Length - pos);
if (amount.Length > 2)
e.Handled = true;
}
else
e.Handled = false;
}
else if (e.KeyChar == '.')
{
if (txtBox.Text.IndexOf('.') > 0)
e.Handled = true;
}
else
e.Handled = true;

}

This code support eight integer value and two decimal digits.

Please let me know this will help for you.

Thanks,
S.Gopal.

Gopal.S

Re: Check for Numeric value

originSH4-Sep-07 3:24

originSH

4-Sep-07 3:24

You know you can add a reference to Microsoft.VisualBasic and do the equivilent call (Microsoft.VisualBasic.Information.IsNumeric) right?

Re: Check for Numeric value

Gopal.S4-Sep-07 4:01

Gopal.S

4-Sep-07 4:01

Hi originSH,

I told only this feature not available in C#. Also I don't know VisualBasic. However I have tested your solution, this is very help to solve this problem simply.

Thanks for your suggestion.

Regards,

Gopal.S

Try to define string in Resources.resx with \n but ,NET see this as \\n

Yanshof4-Sep-07 0:45

Yanshof

4-Sep-07 0:45

Try to define new string that contain \n in fine Resources.resx but when look ion the debug i see its like \\n -

What to do ?

Thanks.

Dropdown column in Datagrid

André Stroebel4-Sep-07 0:41

André Stroebel

4-Sep-07 0:41

Hi all,

I would like to have a dropdown control column in my windows form datagrid,
can anyone please help me with this??

I am using .NET 1.1 Wink | ;)

Thanx in advance!

Re: Dropdown column in Datagrid

André Stroebel4-Sep-07 2:56

André Stroebel

4-Sep-07 2:56

never mind i found something

Cancel from Custom Installer

vSoares4-Sep-07 0:30

vSoares

4-Sep-07 0:30

Hi!

Does anyone knows how to cancel an Installation from a Custom Installer class?

Thanks,

vSoares

How to copy all listbox items to cipboard?

Abelinda814-Sep-07 0:26

Abelinda81

4-Sep-07 0:26

Hello everybody,

I'm new here and beginner in C#. I have a question for you,please.
I have a listbox,and I want to copy all items to clipboard.

private void btnCopy_Click(object sender, EventArgs e)
{
for (int i = 0; i < lstAll.Items.Count; i++)
{
lstAll.SetSelected(i, true);
}
Clipboard.SetDataObject(lstAll.SelectedItems.ToString(), true);
}

this is the output: System.Windows.Forms.ListBox+SelectedObjectCollection
What I am doing wrong here? Sigh | :sigh:

Please help!!!

Re: How to copy all listbox items to cipboard?

Colin Angus Mackay4-Sep-07 1:49

Colin Angus Mackay

4-Sep-07 1:49

Abelinda81 wrote:
What I am doing wrong here?

For a start, do you really want to select everything in the list box also? (You're thinking about how a user might do this, not how to do it programmatically)

Also, what do you actually want to appear in the clipboard? The list box has no idea about the clipboard so you have to format the data for it.

What you might want to do is create a StringBuilder and build up a list of the items with an Environment.NewLine at the end of each item, rather than selecting all the items in the list box.

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Re: How to copy all listbox items to cipboard?

Abelinda814-Sep-07 4:36

Abelinda81

4-Sep-07 4:36

Yes, I want to select everything in the listbox as I gathered all the info I need from other listboxes in this final one(lstAll). and now I want to select all items in listbox and copy to clipboard:

private void btnCopy_Click(object sender, EventArgs e)<br />
        {<br />
           StringBuilder strAll = new StringBuilder();<br />
            <br />
            for (int j = 0; j < lstAll.Items.Count; j++)<br />
            {               <br />
                lstAll.SetSelected(j, true);

But I don't now what should I put here before:

Clipboard.SetDataObject(strAll.ToString(), true);

Thank you in advance for your answer(s)!

Re: How to copy all listbox items to cipboard?

Colin Angus Mackay4-Sep-07 5:03

Colin Angus Mackay

4-Sep-07 5:03

You haven't answered the question: Do you really want to select everything in the list box. You are selecting the contents of the list box with apparently no purpose.

foreach(object item in lstAll)
{
    strAll.Append(item.ToString());
    strAll.Append(Environment.NewLine);
}

removing event handlers

JoZ CaVaLLo4-Sep-07 0:09

JoZ CaVaLLo

4-Sep-07 0:09

Hi people...

I'd like to do this:
myButton.Click = null;

But with events I can only use += and -= ... The problem is that I don't know which handlers are associated with this button...

Any Idea?

Re: removing event handlers

originSH4-Sep-07 0:11

originSH

4-Sep-07 0:11

Which ever classes do the += should also being doing the -=.

All you need to do is use the exact same line as the += but with -= Wink | ;)

Active Directory

dorine824-Sep-07 0:01

dorine82

4-Sep-07 0:01

hello,
I wrote the following program. it should be able to make changes in active directory. but it doesn't do it.
can you look at my code and say to me what does not go with?

THANK YOU

using System;
using System.Drawing;
using System.Collections;
using System.Collections.Generic;
using System.DirectoryServices;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.IO.Compression;
using System.Reflection;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Text;

namespace fichier
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.DataGrid dataGrid1;
private Button btnWriteToLDAP;
private DataTable m_dt;
//private System.Windows.Forms.TextBox textBox1;

//

// required designer variable.

private System.ComponentModel.Container components = null;
public Form1()
{
// required for windows Form Designer support

InitializeComponent();

// TODO Add any constructor code after InitializeComponent call
}

// clean up any resources being used

protected override void Dispose(bool disposing)
{
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code

// required method for designer support - do not modify
// the contents of this method with the code editor.

private void InitializeComponent()
{
this.dataGrid1 = new System.Windows.Forms.DataGrid();
this.btnWriteToLDAP = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
this.SuspendLayout();
//
// dataGrid1
//
this.dataGrid1.DataMember = "";
this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dataGrid1.Location = new System.Drawing.Point(8, 40);
this.dataGrid1.Name = "dataGrid1";
this.dataGrid1.Size = new System.Drawing.Size(400, 400);
this.dataGrid1.TabIndex = 0;
//
// btnWriteToLDAP
//
this.btnWriteToLDAP.Location = new System.Drawing.Point(415, 40);
this.btnWriteToLDAP.Name = "btnWriteToLDAP";
this.btnWriteToLDAP.Size = new System.Drawing.Size(75, 23);
this.btnWriteToLDAP.TabIndex = 1;
this.btnWriteToLDAP.Text = "WriteToLDAP";
this.btnWriteToLDAP.UseVisualStyleBackColor = true;
this.btnWriteToLDAP.Click += new System.EventHandler(this.btnWriteToLDAP_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(680, 425);
this.Controls.Add(this.btnWriteToLDAP);
this.Controls.Add(this.dataGrid1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
this.ResumeLayout(false);

}

#endregion
// the main entry point for the application
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e)
{

// on crée une table
m_dt = new DataTable("test");
// on crée des colonnes
m_dt.Columns.Add("TelephoneNumber", System.Type.GetType("System.Int32"));
m_dt.Columns.Add("User", System.Type.GetType("System.String"));
StreamReader fichier = File.OpenText(@"h:\\export.txt");
while (fichier.Peek() >= 0)
{
// on lit une ligne et on ajoute
string ligne = fichier.ReadLine();
string[] vals = ligne.Split(';');
DataRow dr = m_dt.NewRow();
try
{
dr["TelephoneNumber"] = int.Parse(vals[0]);
dr["User"] = vals[1];
m_dt.Rows.Add(dr);
}

catch (Exception ex)
{
Console.WriteLine(ex.GetType().ToString());
Console.ReadLine();
}

}

// on genere le tableau
dataGrid1.DataSource = m_dt;
}

private void btnWriteToLDAP_Click(object sender, EventArgs e)
{

{

DirectoryEntry deUser = new DirectoryEntry("LDAP://ou=User, ou=User Office, ou=User, DC=hte,DC=intra", "don", "mamanetpapa");

DirectorySearcher searchEmploye = new DirectorySearcher(deUser);

searchEmploye.Filter = "(objectClass=user)";

// Display all Employe

foreach (SearchResult unResultat in searchEmploye.FindAll())
{

DirectoryEntry unEmploye = unResultat.GetDirectoryEntry();

}

// Modification of the telephoneNumber

foreach (SearchResult unResultat in searchEmploye.FindAll())
{

DirectoryEntry unEmploye = unResultat.GetDirectoryEntry();
foreach (DataRow row in m_dt.Rows)
{
/*if (row[0].ToString().Contains(" "))
{
string[] str = row[0].ToString().Split(" ");
}*/
MessageBox.Show(unEmploye.Properties["SAMAccountName"].Value.ToString());
if (unEmploye.Properties["SAMAccountName"].Value == row[1])
{
string temp = string.Format("{0} {1}", row[1], row[0]);
MessageBox.Show(temp);
unEmploye.Properties["telephoneNumber"].Value = row[0].ToString();
unEmploye.CommitChanges();
}
}
}

}
}

}
}

Dorine

Re: Active Directory

Dave Kreskowiak4-Sep-07 5:39

Dave Kreskowiak

4-Sep-07 5:39

dorine82 wrote:
it should be able to make changes in active directory. but it doesn't do it.

Boy, that's specific. Handing someone your code and saying "My program doesn't work!" isn't going to get you any useful responses.

Care to explain what you expect this code to do and what it's doing/not doing? Any error messages??

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Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

I'm going crazy! C# operators

Eli Nurman3-Sep-07 23:48

Eli Nurman

3-Sep-07 23:48

int Num = (((1024 / 8) / 3) * 4) + 4;

Returns 172 when it should return 175. Google calculator[^]

Please if any one could help me out.
VB Code returns 175 which is correct as followed:
Dim Num As Integer = (((1024 / 8) / 3) * 4) + 4

Re: I'm going crazy! C# operators

Muammar©

3-Sep-07 23:57

Nothing is wrong with it cuz it's dropping the fractions, if you want to keep the fractions, you should treat the figures as floats not integers.. Try to recalculate it and each time you have a fraction drop it and see the result.

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Re: I'm going crazy! C# operators

originSH4-Sep-07 0:01

originSH

4-Sep-07 0:01

Close ... the fractions arn't dropped, they are rounded.

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