C# Discussion Boards - CodeProject

custom combobox display issue

11-Sep-07 10:50

I opened in vs and tried to add new project, but visual C# shows only windows and office types, how can I add a web app as the project?
I created the web app sln by going through File->New Website because file->project does not show web application at all.

Please help

arevans11-Sep-07 9:09

arevans

11-Sep-07 9:09

I built a custom control 'ChooseBox' that inherits from ComboBox. When I select an item from a choosebox control, the text in the textbox cannot be seen because of the blue selected text color. If I click away, the selected text is there. I can't see anything wrong with my code. I know this is probably a simple q. Here is the code. Can anybody help?

arevans

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using UtilityCode;

namespace WindowsControlLibrary
{
public class ChooseBox : ComboBox
{
public ChooseBox()
{
this.CausesValidation = true;
this.GotFocus += new EventHandler(ChooseBox_GotFocus);
this.LostFocus += new EventHandler(ChooseBox_LostFocus);
this.DropDown += new EventHandler(ChooseBox_DropDown);
this.Font = new Font("Andale Mono", 11F, FontStyle.Regular);
} // constructor

void ChooseBox_GotFocus(object sender, EventArgs e)
{
this.BackColor = Color.Yellow;
this.Font = new Font(this.Font, FontStyle.Bold);
} // method: GotFocus

void ChooseBox_LostFocus(object sender, EventArgs e)
{
this.BackColor = Color.White;
this.Font = new Font(this.Font, FontStyle.Regular);
} // method: LostFocus

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
bool retValue = base.ProcessCmdKey(ref msg, keyData);
const int WM_KEYDOWN = 0x100;
const int WM_SYSKEYDOWN = 0x104;
if ((msg.Msg == WM_KEYDOWN) || (msg.Msg == WM_SYSKEYDOWN))
{
switch (keyData)
{
case Keys.Down:
SendKeys.Send("{TAB}");
retValue = true;
break;

case Keys.Up:
SendKeys.Send("+{TAB}");
retValue = true;
break;

case Keys.Enter:
SendKeys.Send("{TAB}");
retValue = true; // setting retValue =true here prevents a beep
break;
}
return retValue;
} // method: ProcessCmdKey

void ChooseBox_DropDown(object sender, EventArgs e)
{
this.BackColor = Color.White;
this.Font = new Font(this.Font, FontStyle.Regular);
}
}
}

Re: custom combobox display issue

Skippums11-Sep-07 11:28

Skippums

11-Sep-07 11:28

You could override the OnPaint method, and check to see the bounds of the selected item, then redraw the text using a white font after base.OnPaint is done. I don't see any more obvious way to accomplish that, but let us know if you find one.

Jeff

DefaultValue Attribute for System.Collections.ArrayList

Christopher Stratmann11-Sep-07 8:24

Christopher Stratmann

11-Sep-07 8:24

I cannot seem to figure it out. The default value is not working because it still comes up in bold in the property window.

private System.Collections.ArrayList _Test;
[DefaultValue(null)]
[Editor(typeof(TestCollectionEditor), typeof(System.Drawing.Design.UITypeEditor))]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public System.Collections.ArrayList Test
{
   get
   {
      if (_Test == null)
         _Test = new System.Collections.ArrayList();
      return _Test;
   }
   set { _Test = value; }
}

I have tried....
[DefaultValue("")]
[DefaultValue(-1)]

Chris

Re: DefaultValue Attribute for System.Collections.ArrayList

Judah Gabriel Himango11-Sep-07 10:10

Judah Gabriel Himango

11-Sep-07 10:10

What is it you want to happen? Not show up bolded in the properties window of Visual Studio? Or not show up at all in the Visual Studio properties window?

Tech, life, family, faith: Give me a visit.
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Judah Himango

Re: DefaultValue Attribute for System.Collections.ArrayList

Christopher Stratmann12-Sep-07 1:43

Christopher Stratmann

12-Sep-07 1:43

I dont want it to show up in bold.

Clear ButtonClick event

SamuelClay11-Sep-07 7:41

SamuelClay

11-Sep-07 7:41

I have a simple site allows someone to register to download a help file. It has 3 pages:

The main page has the form fields, with a button for submitting that has an onclick event.

The code behind page has the onclick code for the button click. Once this processes, it forwards to the download page.

the Download page has a clickable link to download the pdf file.

Simple, right? ... Well the problem is, if the user hits the back button from the download page, the Click event is still active and the registration code runs again, then redirects back to the download page.. so the user hits back again.. and the loop continues... I have ended up with 8-10 copies of a user.

so I guess I need to clear the click event after processing the registration, before the redirect. But I have been having trouble finding information on how to do this? Is there a quick and easy fix that I am overlooking?

thanks

Sam

Kristian Sixhøj11-Sep-07 7:50

Kristian Sixhøj

11-Sep-07 7:50

Why don't you just make a link on the registration page that leads to the main page? So if the user wants to go back, they can click that link.

Admitted, the other solution would be better, but this one is very simple and quick to make.

- Virtual1ty
--
"Any fool can learn from his own mistakes, but a wise man learns from mistakes of others"

Christian Graus11-Sep-07 8:03

11-Sep-07 8:03

The easiest way is to redirect your page to itself. That resets the viewstate, so that going back doesn't cause a refresh of the page load that sent the click event to the code behind.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

SamuelClay11-Sep-07 8:25

SamuelClay

11-Sep-07 8:25

I'm not positive what you mean. How do I get to the download page if I am redirecting back to the default page? i could add a query string and check that, I suppose and then forward to the download page, but it seem like an odd way to move through what should be a straight forward pageflow...

Error : Not All Code Paths Return A Value

Brent Lamborn12-Sep-07 3:21

Brent Lamborn

12-Sep-07 3:21

There are several ways to do it. One possiblity is to set a persistent cookie on the download page. In the page load event of the registration page, check for the cookie, if it is there, send them to the download page. Then if they come back to the registration page tomorrow or next week, they will be sent along to the download page (assuming it is not a secure page).

"Half this game is ninety percent mental." - Yogi Berra

If you can read thank a teacher, if you can read in English, thank a Marine.

ctrlnick11-Sep-07 6:50

ctrlnick

11-Sep-07 6:50

Hi All ,

I think the solution for this problem is simple.. But I am unable to get one.

Can you please help me .
The Following code Shows an error: Not All Code Paths Return A Value

public TestCaseDataSet.TestCaseDataTable GetTestCaseSimpleFilterResults(List<int> TestCategories, List<int> Printers, List<int> OsAllowed,List<int> runOs, List<int> Platform,List<int> Status, string BeginRunDate, string EndRunDate)
{
try
{
return mngTestCase.Get_TestCases_ByMasterFilter_01_StronglyTyped(TestCategories,Printers,OsAllowed,runOs,Platform,Status,BeginRunDate,EndRunDate);

}

catch (Exception ex)
{
Console.WriteLine("Error" +ex.Message);
}

}

GetTestCaseSimeFilterResults is the funtion that it is happenning for.

Please help me out,

Thanks
Nikhil Pagidala

Happy Programming!

Regards,
Nikhil Pagidala

Re: Error : Not All Code Paths Return A Value

Patrick Etc.11-Sep-07 6:53

Patrick Etc.

11-Sep-07 6:53

What gets returned if the catch executes?

Answer that and you have the answer to your question.

Re: Error : Not All Code Paths Return A Value

Christian Graus11-Sep-07 7:00

Differentiate :User accessing form internet and user accessing from with the organization

11-Sep-07 7:00

The reason you're getting this error, is that not all code paths will return a value. The best thing to do is to declare an instance of the return type at the top, with a default value, set that value in the rest of the code, and return it at the bottom.

What do you want it to return if the method throws an exception ? Why do you have a generic try/catch here at all, what errors are you anticipating, and if they are written to the console, who will see them ? What will the rest of the code do if an error is caught and swallowed here, just try to soldier on ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

ss.mmm11-Sep-07 6:40

Re: Differentiate :User accessing form internet and user accessing from with the organization

11-Sep-07 6:40

I have a web site which should be accessed by the user within the organization and user from outside through Internet.......Now how can i know who is accessing the web site........I have different access previlages for both........
How can i achieve this using asp.net2.0

Plz help me

Giorgi Dalakishvili11-Sep-07 6:47

Giorgi Dalakishvili

11-Sep-07 6:47

I don't know if it is possible in ASP.NET but I would examine the IP address of the person who is accessing the website.

#region signature
my articles
#endregion

How to call ButtonClick event?

ss.mmm11-Sep-07 6:38

Re: How to call ButtonClick event?

11-Sep-07 6:38

Hi,

I have a form with a button1 click event. Now, I need to have a different button2 on the form but the functionality should be of button1. So, I need to call button1_click event from button2_click event.
The below code works. But I need the event args not empty. Can you suggest some idea?

protected void Button1_Click(object sender, EventArgs e)
{ TextBox1.Text = "test"; }

protected void Button2_Click(object sender, EventArgs e)
{Button1_Click(null, EventArgs.Empty );}

Christian Graus11-Sep-07 6:47

Re: How to call ButtonClick event?

11-Sep-07 6:47

That works, but if you want to pass on the args, why not pass on e ? And, isn't the default event args devoid of anything useful ?

A more intelligent design would be to factor the code in button1_click to a method that all click events call, or just point all buttons to the one event. I assume this is just sample code, by the dumb variable names, so there may be complications with having one event, but one common method is always good.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Giorgi Dalakishvili11-Sep-07 6:56

Giorgi Dalakishvili

11-Sep-07 6:56

First of all, you can have the same event handler for both of the buttons. If you are using VS 2005, you can choose the event handler for button2 from dropdown list of event handlers at the click event. You can also specify the same event handler like this:

<br />
this.Button1.Click += new System.EventHandler(this.Button1_Click);<br />
this.Button2.Click += new System.EventHandler(this.Button1_Click);<br />

Secondly, EventArgs doesn't have any properties that carries any useful information so what do you need instead of EventArgs.Empty ? If you need any additional properties you can write you own class that inherits from EventArgs and extends its functionality

#region signature
my articles
#endregion

Re: How to call ButtonClick event?

ss.mmm11-Sep-07 8:42

Crystal Reports XI R2 question

11-Sep-07 8:42

Thanks

mjmcinto11-Sep-07 5:56

mjmcinto

11-Sep-07 5:56

I've developed a Crystal Reports, and when exported to PDF, it looks great. It even looks great (to me) when exported to excel. However, one of the business users is stating they have an issue with it. Since some of the cells that are being used are wider than the default for excel it is merging the cell with data with the cells around it, and centering the data in the merged cells. Does anyone know how to tell it I don't want it to do this?

Re: Crystal Reports XI R2 question

Mark Miller11-Sep-07 7:42

Mark Miller

11-Sep-07 7:42

When exporting Crystal Reports to Excel, I have found these general rules help:

1. Use Guidelines extensively to ensure all fields are perfectly aligned vertically.
2. Avoid using Center alignment in fields.
3. Fields cannot overlap one another, otherwise extra rows will result in the spreadsheet.

HTH!

Sincerely,

-Mark
mark@msdcweb.com
http://www.msdcweb.com

Looking for vector editor.

nEJIbMEHb11-Sep-07 5:54

nEJIbMEHb

11-Sep-07 5:54

Hi there!

I need something visio-like for our upcoming delphi project conversion. All I found so far is VG.NET. But it is design-time editor. I am looking for run-time.

Any advices?

Thanks.

Re: Looking for vector editor.

Christian Graus11-Sep-07 6:04