Re: ComboBox AutoComplete with id value - C# Discussion Boards

ComboBox AutoComplete with id value

19-May-09 8:56

Expresso - A Tool for Building and Testing Regular Expressions[^] should do the trick..

Do Or Don't, there is no "try catch ex as exception end try"

Color Convertor

Rafone19-May-09 8:34

Rafone

19-May-09 8:34

Hello Fellow Coders;

Has anyone run across a convertor from the frequency of light to windows colors?

tia
rafone

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What they reveal is astonishing ...
But what they hide is vital ...

Re: Color Convertor

led mike19-May-09 8:50

led mike

19-May-09 8:50

Rafone wrote:
Has anyone run across a convertor from the frequency of light to windows colors?

I never had until you asked the question, then i did this[^]

Noctris19-May-09 6:28

Re: ComboBox AutoComplete with id value

19-May-09 6:28

Hi Everyone,

I have a combobox that i need to populate with a datasource from my database. Because i want to make this autocomplete AND have the possibility to enter new things, i have done the following:

Private void LoadAuthors()
{

cmbAuthors.DataSource = Dataset;
cmbAuthors.DisplayMember = "Name";
cmbAuthors.ValueMember = "Id";
cmdAuthors.AutoCompleteCustomSource = AutoCompleteStringCollectionIMadeFromTheDataSet;
cmbAuthors.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
cmbAuthors.AutoCompleteSource = AutoCompleteSource.CustomSource;

}

And all is well in Autocomplete land and datasource land.. however...

to find out if they entered a new name ( and i need to pop up a form to complete extra info), i have a handler for the "leave" event on the combobox:

private void cmbAuthors_Leave(object sender, EventArgs e)
        {
            if (cmbAuthors.SelectedValue != null)
            {
                MessageBox.Show("We know the dude...");
            }
            else
            {
                MessageBox.Show("Who's that ? better make a new one !");
// FrmAuthorDetails FrmAddNewAuthor = new FrmAuthorDetails();
            }
        }

now the problem is:

When you leave the combobox, the selectedvalue always is null, i get the "who's that" message, and when i click ok to that THEN the selectedindex event fires on the combobox (and thus only getting the required data to make this check)

Is there any way to make sure the selectedindex event is fired first or manually fire the autocomplete so it will complete BEFORE, it actually fires the leave event ?

Any other intelligent solution i could not think of or have not found on google codeproject is welcome too obviously Wink | ;-)

Do Or Don't, there is no "try catch ex as exception end try"

musefan19-May-09 6:42

Re: ComboBox AutoComplete with id value

19-May-09 6:42

what about trying to replace

if (cmbAuthors.SelectedValue != null)

with

if(cmbAuthors.Items.Contains(cmbAuthors.Text))//check if name is in the list

Life goes very fast. Tomorrow, today is already yesterday.

Noctris19-May-09 7:06

Re: ComboBox AutoComplete with id value

19-May-09 7:06

Hmm.. unfortunately, it does not even recognize that Frown | :(

Strange thing is, if i look at what cmbAuthors.text contains, it is the text i want..

but it does not work. so that got me thinking and i tryed:

cmbAuthors.selectedtext = cmbauthors.text;

But.. helas.. it only uses the actual typed text so for example "mad" if you are looking for madonna :s

I am thinking that autocomplete uses the same event (leave) to do it's autocomplete magic..

When i change the handler to the "onSelectedValueChanged", it does work .. however, that event get's fired multiple times on Runtime (so when binding the datasource for example)... and does not fire when the value you type in is unknown in the dataset/autocomplete

The problem is that i really have to do the check when leaving the combo ...

Do Or Don't, there is no "try catch ex as exception end try"

Noctris19-May-09 9:37

19-May-09 9:37

For the people that want to know.

Apparently the Leave event is fired before autocomplete can do it's magic however, Putting the handler on the LostFocus event solves the issue. It's just not visibile in the VS2005 UI...

Solved Wink | ;-)

Do Or Don't, there is no "try catch ex as exception end try"

Toolstrip font combobox

malcomhfc19-May-09 5:01

19-May-09 5:01

I have a toolstrip and added a combobox, i wish to populate that combo box with a list of fonts that will change the font in the textbox or richtextbox.

I have searched everywhere and only found one example but it's code didn't seem to work. I have tried myself but since this is all for learning.

Im using visual c# express.

Any help will be great thanks,

Malcom

Malcom

0x3c019-May-09 5:13

19-May-09 5:13

If you're looking to get the list of all fonts on the system, then use something like this:

System.Drawing.Text.InstalledFontCollection fonts = new System.Drawing.Text.InstalledFontCollection();

foreach(FontFamily family in families)
{
    if(family.IsStyleAvailable(FontStyle.Regular))
    {
        Font font = new Font(family, 12, FontStyle.Regular);
    }
}

That gets every font style and creates a Font object from it. From there it's simple enough to add the Font name to a combo box, and hook the SelectionChanged event to create a font from its name and set the textbox's Font property

malcomhfc19-May-09 5:21

19-May-09 5:21

So in visual i create a new class and add that code in. Then i go to combobox and do the rest..?

Sorry, still getting to grips with all of this, when i first started learning i was using smallbasic.

0x3c019-May-09 5:40

Re: Toolstrip font combobox [modified]

19-May-09 5:40

That code will get a list of every installed font in the system. Double click on the Form, and you'll get a method called xxx_Load, where xxx is the name of your Form (not the Text property, that's just the caption). Put the code in there (don't forget to add a using System.Drawing statement at the top of your code file), but just after the line with new Font(..) in it, add an item to the combobox with the text of font.Name

That lists the fonts used in the combobox. When you want to set the textbox's Font property, double click in the combobox, and put some code in there which creates a Font (using new) from the SelectedItem property of the combobox. Set the textbox's Font property to that Font object you just created

malcomhfc19-May-09 5:44

19-May-09 5:44

Ok, thanks alot ill give it a shot Wink | ;)

edit: the word 'famlies' "foreach(FontFamily family in families)"

is underlined in red: word does not exist in current context.

Sorry again, ive added the using system statement etc, wont go away. Frown | :(

edit: before i start to annoy you maybe i presented this out wrong. I created a project just to try this out and see if i can get it working. Thats why i still have all the names like form1 :P

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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            System.Drawing.Text.InstalledFontCollection fonts = new System.Drawing.Text.InstalledFontCollection();

            foreach (FontFamily family in families)
            {
                if (family.IsStyleAvailable(FontStyle.Regular))
                {
                    Font font = new Font(family, 12, FontStyle.Regular);
                }
            }
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }
    }
}

modified on Tuesday, May 19, 2009 11:53 AM

musefan19-May-09 6:16

19-May-09 6:16

the error is that 'families' does not exist. change it to 'fonts'. Its a mistake in the code

Life goes very fast. Tomorrow, today is already yesterday.

musefan19-May-09 6:36

19-May-09 6:36

Even with that error fixed the code you have posted wont do what you want.

so here are the fixes, the should work...

1. in you load event change the 'families' to 'fonts'
2. just before you foreach loop add the following line...

comboBox1.Items.Clear();

3. inside your foreach loop replace all code with this line only...

comboBox1.Items.Add(family.Name);

this should then populate you combo box with all the fonts

4. in your selected index changed event add the following code to alter you textbox font...

textbox1.Font = new Font(comboBox1.Text, 10);//where 10 is the size of the font

Life goes very fast. Tomorrow, today is already yesterday.

malcomhfc19-May-09 7:20

19-May-09 7:20

I get a error:

foreach statement cannot operate on variables of type 'System.Drawing.Text.InstalledFontCollection' because <'System.Drawing.Text.InstalledFontCollection' does not contain a public definition for 'GetEnumerator' ...................................

Thats after foreach (FontFamily family in fonts) - changing it from 'family' to 'fonts'

This is so much harder than small basic but i like challenges, ones that not go so well Frown | :(

0x3c019-May-09 10:18

19-May-09 10:18

Change the foreach from fonts to fonts.Families

0x3c019-May-09 6:37

19-May-09 6:37

Whoops. I took the code from one of my snippets, so had to adapt it for some reason. Don't worry though, I'm not annoyed in the slightest. You're trying to learn, and that's always a good thing

blackhattrick19-May-09 8:34

blackhattrick

19-May-09 8:34

Have you tried FontDialog? I dont know if its useful for u:

using System.Windows.Forms;

FontDialog fontDialog = new FontDialog(); 
if ( fontDialog.ShowDialog() != DialogResult.Cancel )
{
   textBox.Font = fontDialog.Font;
}

malcomhfc19-May-09 8:40

Class Library / name space Question

19-May-09 8:40

Thanks for the imput, ive tried that one Smile | :)

Just wanting the one for combo box i believe it's all me getting confused easy Big Grin | :-D

gmhanna19-May-09 4:48

gmhanna

19-May-09 4:48

Hi,

I have built a class called MyGlobal with a name space of nsMyGlobal. I have added the .DLL to the references and I can see MyGlobal in the list.

I then add a "using MyGlobal;" to the top of my new project C# source and then added a:
myglobal = new MyGlobal( ); // define a reference to it

When I try to build, I'm getting the following error message:

Error 1 The type or namespace name 'MyGlobal' could not be found (are you missing a using directive or an assembly reference?)

I'm not sure what I did wrong...

Thank you,
Glenn

Glenn

Re: Class Library / name space Question

OriginalGriff19-May-09 4:50

OriginalGriff

19-May-09 4:50

gmhanna wrote:
I have built a class called MyGlobal with a name space of nsMyGlobal

gmhanna wrote:
I then add a "using MyGlobal;"

See the error now?

No? Try

using nsMyGlobal;

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Re: Class Library / name space Question

musefan19-May-09 4:54