C# Discussion Boards - CodeProject

vinSharp16-Nov-06 0:00

16-Nov-06 0:00

gareth111,

By points 1 and 2 I meant the following:
Suppose you add InitControl at Location (10,10) within the this.Controls
and elsewhere you add another opaque control whose span overlaps the InitControl, then also it would make your control invisible.

To do a double check on that, add the following line after initControl.SetBounds(...)

Add the line: initControl.BringToFront()

Check whether this works for you...

There are two types of fools in this world: One who give advice and the others who do not take it...

Re: Displaying a Control at Runtime

Gareth H16-Nov-06 1:23

Gareth H

16-Nov-06 1:23

Ye, that worked, cheers.

use c# to search for an hardware

keroed_edmond15-Nov-06 4:46

keroed_edmond

15-Nov-06 4:46

i want to integrate a sentinel hardware device with one of my applications that icreated, so i wanted to know if C# is able to check for hardwares that are plugged in on your machine, so i would love for anyone to tell me how to do this or send me a link of what to read up on to do this

kenny edmond

Re: use c# to search for an hardware

Judah Gabriel Himango15-Nov-06 11:59

Judah Gabriel Himango

15-Nov-06 11:59

C# and the .NET framework don't do this. You can use P/Invoke[^] to call into the Win32 API all you like though, so if it's possible there, it's possible through C#.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: God-as-Judge, God-as-Forgiver
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

filter datagrid bound to arraylist

zamillia zuma15-Nov-06 3:45

zamillia zuma

15-Nov-06 3:45

I have a datagrid bound to an ArrayList
Is it possible to search this datagrid by filtering on text into a text box
for a specific column?

Any advice is very much welcome

Re: filter datagrid bound to arraylist

Kevin McFarlane15-Nov-06 4:14

Kevin McFarlane

15-Nov-06 4:14

Yes I think it is. I expect you'll have to define IComparable on the class you use to represent a row of the grid, so that you can do a search on the collection. I've not tried it but I vaguely remember seeing an online article somewhere which did this.

Kevin

Re: filter datagrid bound to arraylist

Drew McGhie15-Nov-06 4:40

Drew McGhie

15-Nov-06 4:40

Do you mean a DataTable?

I'm going to guess that you do, or that you have a datatable feeding both the DG and the Arraylist.

Anyways, you can adjust the datatable.defaultview.filter property with SQL-like filter parameters.

Re: filter datagrid bound to arraylist

zamillia zuma15-Nov-06 4:49

zamillia zuma

15-Nov-06 4:49

No I don't have a datatable..
I have an object filled by a stored procedure.
The datagrid is filled by calling the fetch function on the class

Thanks

Re: filter datagrid bound to arraylist

Drew McGhie15-Nov-06 9:55

Drew McGhie

15-Nov-06 9:55

OK, fill a datatable with the fetch function and then make that the datagrid's datasource.

Re: filter datagrid bound to arraylist

zamillia zuma15-Nov-06 9:56

zamillia zuma

15-Nov-06 9:56

yes that is what I have done..
I want to be able to now enter search criteria into a text box and filter the grid

Re: filter datagrid bound to arraylist

Drew McGhie15-Nov-06 10:50

Drew McGhie

15-Nov-06 10:50

OK. On some event (button click or textbox changed), set the DataTable.DefaultView.RowFilter = " Field like " + TextBox.Text

Re: filter datagrid bound to arraylist

zamillia zuma17-Nov-06 0:23

zamillia zuma

17-Nov-06 0:23

I'd really love to but I'm not using a DataTable

Master pages and menus

lsugirljte15-Nov-06 3:37

lsugirljte

15-Nov-06 3:37

Hi,

Can anyone see the problem here? I have a very simple master page with a very simple content page. I just want a menu on the master page. There are several things that aren't working the way I would like them to.

1. The menu is horizontal and pushing the content place holder down when it's expanding down. I would like it to hover over the content page and not move it.

2. it's not displaying the items when hovering. It's just displaying a white box where the items are suppose to be.

I have been looking at this for 2 days without any progress. Can someone help me?

simple.master
***********************
<%@ Master Language="C#" AutoEventWireup="true" Codebehind="simple.master.cs" Inherits="EPMS.Frameset.simple" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Simple Master</title>
<style>

.toolbar
{
font-size: 13px;
font-family: Verdana;
padding: 6px;
filter:
progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=#ffffff,endColorStr=lightblue);
}

</style>
</head>
<body bgcolor="silver">
<form id="form1" runat="server">
<asp:SiteMapDataSource ID="ExampleSiteMapDS" runat="server" ShowStartingNode="false" />
<asp:Menu ID="Menu1" runat="server" Orientation="Horizontal" CssClass="toolbar" DataSourceID="ExampleSiteMapDS">
<StaticMenuStyle CssClass="toolbar" />
<StaticMenuItemStyle CssClass="toolbar" />
<DynamicHoverStyle CssClass="toolbar" />
<DynamicMenuStyle CssClass="toolbar" />
</asp:Menu>
<br />
<br />
<asp:ContentPlaceHolder ID="middleContent" runat="server">
</asp:ContentPlaceHolder>
</form>
</body>
</html>

simplepage.aspx
********************************
<%@ Page Language="C#" MasterPageFile="~/Frameset/simple.Master" AutoEventWireup="true"
Codebehind="simplepage.aspx.cs" Inherits="EPMS.EPMS_Request.simplepage" Title="Simple Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="middleContent" runat="server">
<h2>
This is the simple page.
</h2>
</asp:Content>

web.sitemap
*******************************
<?xml version="1.0" encoding="utf-8" ?>
<siteMap>
<siteMapNode title="Home">
<siteMapNode title="Products">
<siteMapNode title="Hardware" url="Default.aspx?node=hardware">
<siteMapNode title="Mouse"/>
<siteMapNode title="Keyboard"/>
<siteMapNode title="NetCard"/>
<siteMapNode title="Monitor"/>
<siteMapNode title="PC"/>
</siteMapNode>
<siteMapNode title="Software" url="Default.aspx?node=software">
<siteMapNode title="Spreadsheet"/>
<siteMapNode title="Word Processor"/>
<siteMapNode title="Presentation"/>
<siteMapNode title="Mail"/>
<siteMapNode title="Games"/>
</siteMapNode>
<siteMapNode title="Books" url="Default.aspx?node=books">
<siteMapNode title="Programming"/>
<siteMapNode title="Debugging"/>
<siteMapNode title="Testing"/>
<siteMapNode title="Web Apps"/>
<siteMapNode title="WinForm Apps"/>
</siteMapNode>
</siteMapNode>
<siteMapNode title="Services">
<siteMapNode title="Consulting" url="Default.aspx?node=consulting">
<siteMapNode title="Processes"/>
<siteMapNode title="Management"/>
<siteMapNode title="Recruiting"/>
</siteMapNode>
<siteMapNode title="Development" url="Default.aspx?node=development">
<siteMapNode title="Web Apps"/>
<siteMapNode title="Enterprise Apps"/>
<siteMapNode title="Database"/>
</siteMapNode>
</siteMapNode>
<siteMapNode title="Support">
<siteMapNode title="Drivers" url="Default.aspx?node=drivers">
<siteMapNode title="Audio"/>
<siteMapNode title="Network"/>
<siteMapNode title="Printer"/>
<siteMapNode title="Modem"/>
</siteMapNode>
<siteMapNode title="Manuals" url="Default.aspx?node=manuals">
<siteMapNode title="Applications"/>
<siteMapNode title="Troubleshooting"/>
<siteMapNode title="Installation"/>
<siteMapNode title="Internet"/>
</siteMapNode>
<siteMapNode title="Updates" url="Default.aspx?node=updates">
<siteMapNode title="Release 1"/>
<siteMapNode title="Game Package"/>
</siteMapNode>
</siteMapNode>
</siteMapNode>
</siteMap>

Thanks, Jessica

Re: Master pages and menus

Stefan Troschuetz15-Nov-06 6:04

Stefan Troschuetz

15-Nov-06 6:04

The ASP.NET forum is more suitable for this kind of question.

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Re: Master pages and menus

lsugirljte15-Nov-06 6:07

lsugirljte

15-Nov-06 6:07

Found it. In the epms web.config, there is a line

<system.web>
<xhtmlConformance mode="Legacy"/>
</system.web>

This was causing my problem.

http://weblogs.asp.net/dannychen/archive/2005/12/16/433332.aspx

(Sorry about posting in this forum. I was in the asp.net forum but when I clicked New Message, it created it in this forum.)

Thanks, Jessica

calculating with measurements

Yustme15-Nov-06 3:35

Yustme

15-Nov-06 3:35

Hi,

I'm trying to make a project which "converts" for example from meters to centimeters. I fill 20 labels with a random generated question containing a "fromUnit" and "toUnit" object.

Here is my code:

public partial class Metrics : Form
{
private double[] _answer;
private TextBox[] _textBox;
private Label[] _labels;

public Metrics()
{
InitializeComponent();
this._answer = new double[20];
this._textBox = new TextBox[20];
this._labels = new Label[20];
this.label1.Text = this.getQuestion(1, 10);
}

private string[][] lengths = new string[][]
{
new string[] {"kilometer", "1000"},
new string[] {"hectometer", "100"},
new string[] {"decameter", "10"},
new string[] {"meter", "1"},
new string[] {"decimeter", ".1"},
new string[] {"centimeter", ".01"},
new string[] {"millimeter", ".001"}
};

public string[] getUnit(int index)
{
return lengths[index];
}

private string getQuestion(int minLength, int maxLength)
{
// Create Random object
Random rand = new Random((int)DateTime.Now.Ticks);

int length = rand.Next(minLength, maxLength); // Gets the length to convert
int randNumber1 = rand.Next(0, 6); // gets the first unit random number
int randNumber2 = rand.Next(0, 6); // gets the second unit random number

while (randNumber1 == randNumber2) // loop ensure that units are not the same
{
randNumber2 = rand.Next(0, 6);
}

string[] fromUnit = getUnit(randNumber1); // gets the unit details from class
string[] toUnit = getUnit(randNumber2); // gets the unit details from class

// gets the answer (i.e. (23 * .(01 / .001)) = 230)
this._answer = length * (Convert.ToDouble(fromUnit[1]) / (Convert.ToDouble(toUnit[1])));

//return the question string
return "How much is " + length.ToString() + " " + fromUnit[0] + "(s) in " + toUnit[0] + "(s)?";
}

private void btnCalculate_Click(object sender, EventArgs e)
{

}

private void FillLabelsWithQuestions()
{
foreach (Control label in this.Controls)
{
if (label is Label)
{
label.Text = getQuestion(1, 100);
}
}
}
}

The problem is, i don't know how to check if the answer is correct which is entered in a textbox and checks the answer when the button "calculate" is pressed, because there are strings involved too.

My labels are named like this:

label1
label2
label3
etc

And so are my textboxes:

textbox1
textbox2
.....

This is a screenshot of how my Form looks like:

http://i15.tinypic.com/49icglh.jpg

Anyone any suggestion?

Thanks in advance!

Re: calculating with measurements

ed^nrgc15-Nov-06 3:42

ed^nrgc

15-Nov-06 3:42

I wouldn't use a multidimensional string array. There are many other better options.

If you stay with the current array, you can store your answers in another array. Then check each answer against that array.

Re: calculating with measurements

Yustme15-Nov-06 3:49

Yustme

15-Nov-06 3:49

Hi edboe,

I ran out of options how to do it and the multidimensional seems to work.

Do you have a sample for me about that "check each answer against that array"?

Thanks in advance!

How to Check for Serialport status...?

IamHuM15-Nov-06 2:59

IamHuM

15-Nov-06 2:59

Hi...

How i can check Serailport status...? Means whether another application is using that serialport or not...?

In my application, if i dont check this & if some other application or hyprterminal is using same comport then my application is crashing...

Thanks in advance,

Vinay

Re: How to Check for Serialport status...?

Rey999917-Nov-06 4:39

Rey9999

17-Nov-06 4:39

<br />
SerialPort port = new SerialPort("COM1");<br />
<br />
try<br />
{<br />
  port.Open();<br />
}<br />
catch(Exception ex)<br />
{<br />
  MessageBox.Show("Port " + port.PortName + " is already in use")<br />
}<br />

~~~ From Milano to The Hague, easy as it goes ~~~

Detect and Read Pen drive

Ravikumar Patra15-Nov-06 2:58

Ravikumar Patra

15-Nov-06 2:58

There is a requirement that, my application should sence that a pen drive is attached then it should read the files and copy to the machine.

What Should I do

My application is in C#

Please help

Rabindra

Rabindra

Re: Detect and Read Pen drive

ejuanpp15-Nov-06 4:45

ejuanpp

15-Nov-06 4:45

Can you be a bit more specific?

How to read an exact character from text file

CodeItWell15-Nov-06 2:28

CodeItWell

15-Nov-06 2:28

How to read an exact character from text file.
Example:line 2 char 15. Or just 15-th char.
I have Visual Studio 2003.

Vasildb

Re: How to read an exact character from text file

Tamimi - Code15-Nov-06 2:37

Tamimi - Code

15-Nov-06 2:37

1 read the whole text in that file and put in a string.
2 split the string by "\n" and you will get array of strings
use it to get the line number.
3 when you extract the line go the your char

When you get mad...THINK twice that the only advice
Tamimi - Code

Re: How to read an exact character from text file

V.15-Nov-06 2:37

15-Nov-06 2:37

you can read in the textfile into a string and then select the character you want.
You could also read in the textfile line per line, put it in a string and select the character.

Look into StreamReader class and string class on MSDN.

hope this helps.

V.
Stop smoking so you can: enjoy longer the money you save.

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