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Just FYI, there is also a method called Convert.ToInt32(). Either method will work fine.
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I've created a control that has a simple label on it and a progress bar. When a certain event happens i create a new instance of the control and add it to my parent control. Once the event is finnished i dispose of the control.
My problem is that the control is never displayed. I know its being created since i've added trace's and can see that its checking to see if it needs to update the progress bar.
When i call the progress bar, i check to see if it needs to be invoked and then do the below code:
initControl = new InitControl();<br />
this.Controls.Add(initControl);<br />
<br />
int posX = ((this.Width / 2) - (initControl.Width / 2));<br />
int posY = ((this.Height / 2) - (initControl.Height / 2));<br />
initControl.SetBounds(posX, posY, 100, 100);
The question is, What am i missing so the control isnt showed?
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gareth111 wrote: Once the event is finnished i dispose of the control.
A control that has been disposed is not going to display.
led mike
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There are mainly 2 to 3 points you need to take care of:
1.) You are adding to this.Controls, so hopefully there should be no other control present at the same Location within this.Controls array.
2.) The InitControl is the topmost control within the this.Controls list.
3.) The InitControl's 'Visible' property is set to TRUE.
Regards,
Vin...
There are two types of fools in this world: One who give advice and the others who do not take it...
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led mike:
I dont dispose of it until im finnished with it, i dont just create it and then dispose of it instantly.
vinSharp:
Its visiability is set to true, but im unsure what you mean by 1 and 2.
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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...
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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
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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#.
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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
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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
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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.
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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
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OK, fill a datatable with the fetch function and then make that the datagrid's datasource.
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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
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OK. On some event (button click or textbox changed), set the DataTable.DefaultView.RowFilter = " Field like " + TextBox.Text
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I'd really love to but I'm not using a DataTable
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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
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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
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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
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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!
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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.
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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!
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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
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<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 ~~~
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