C# Discussion Boards - CodeProject

Re: RichTextBox - Saving embedded controls

Anthony Queen30-Nov-06 3:57

30-Nov-06 3:57

Well, I'm not using an OLE object (which is the most likely reason why this doesn't work), I'm using a control I created in VS 2003. I'm fairly certain that if I implement the correct interfaces in the control that it will save correctly. But, I wouldn't swear to it.

I've tried the save file, I've even tried streaming it straight to disk. The objects are there because I can (using IRichEditOle.GetObjectCount) get a correct count of objects, and actually get the objects back, cast them to the appropriate control and access their properties. This is all before saving though. Once saved, it seems that only a placeholder is saved, and not the object or it's data.

Any ideas on what ole interfaces need to be implemented? Any Examples would be appreciated as well. I can't seem to find a lot of information about this.

Thanks,
Tony

It's only when you look at an ant through a magnifying glass on a sunny day that you realise how often they burst into flames.

Re: RichTextBox - Saving embedded controls

Anthony Queen4-Dec-06 3:00

Anthony Queen

4-Dec-06 3:00

Any help is appreciated.

It's only when you look at an ant through a magnifying glass on a sunny day that you realise how often they burst into flames.

Listbox and contextmenu

iakob29-Nov-06 9:05

iakob

29-Nov-06 9:05

I have a listbox with a contextmenu. The contextmenu has items such as "add" and "move up" and "move down" and "delete".

But how do I get the listboxitem that were clicked and hence the 'object' for the actions? It's not the selected item on the listbox since I right clicked to get the contextmenu.

I have a feeling that this should be easy, but I just dont know how to do it.

Re: Listbox and contextmenu

led mike29-Nov-06 9:14

led mike

29-Nov-06 9:14

iakob wrote:
But how do I get the listboxitem that were clicked

They hide that information in the documentation[^]

led mike

Re: Listbox and contextmenu

Scott Dorman29-Nov-06 10:57

Scott Dorman

29-Nov-06 10:57

Basically, you need to handle the MouseDown event on the listbox and select the item you clicked.

private void listBox1_MouseDown(object sender, MouseEventArgs e)
{
   ListBox listBox = sender as ListBox;
 
   if (e.Button == MouseButtons.Right)
   {
      int index = listBox.IndexFromPoint(e.X, e.Y);
      if (index >= 0 && index < listBox.Items.Count)
      {
         listBox.SelectedIndex = index;
      }
      listBox.Refresh();
   }
}

In your event handler for the the context menu item, you will need to test if there are any selected items and do the appropriate action. Something like this:

private void deleteToolStripMenuItem_Click(object sender, EventArgs e)
{
   if (listBox1.SelectedItems.Count > 0)
   {
      MessageBox.Show(listBox1.SelectedItems[0].ToString());
   }
   else
   {
      MessageBox.Show("You didn't select an item!");
   }
}

If you really want to, you would actually enable/disable context menu options in your MouseDown event handler based on an item being selected or the user right clicking in "white space".

-----------------------------
In just two days, tomorrow will be yesterday.

Thanks Was: Listbox and contextmenu

iakob29-Nov-06 20:34

iakob

29-Nov-06 20:34

Thank you both (though one was more impudent than the other Smile | :)

.

I've browsed the documentation and googled the question without finding an answer. Guess I simply failed to spot that particular member. RTFM is simple enough, one should think.

But thanks again.

RichTextBox Coloring Problem

NaNg1524129-Nov-06 9:02

NaNg15241

29-Nov-06 9:02

Hey, this is my problem: i select the last line after i added the new text, i change the color of the line, but then all the lines before becomes the first color inserted and not the color i added them before.

what's the problem and how can i fix it?
this is the code where i add the text in:

private void rtbAddText(String NewText, Color NewColor)
{
    NewText += Environment.NewLine;

    if (NewColor == null)
        this.rtbConsole.Text = NewText;
    else
    {
        int OldLength = rtbConsole.Text.Length;
        this.rtbConsole.Text += NewText;
        this.rtbConsole.Select(OldLength, NewText.Length);
        this.rtbConsole.SelectionColor = NewColor;
        //this.Select();
        //rtbConsole.Select();
    }
}

Thanks... NaNg.

Re: RichTextBox Coloring Problem

Torsten Mauz29-Nov-06 9:31

Torsten Mauz

29-Nov-06 9:31

rather than using

this.rtbConsole.Text += NewText;

you should use

this.rtbConsole.AppendText(NewText);

HTH

Re: RichTextBox Coloring Problem

NaNg1524129-Nov-06 9:46

NaNg15241

29-Nov-06 9:46

Thanks.... was looking for Add() function... (at start) :P

Editing all GridView Rows

Abbas8229-Nov-06 8:52

Abbas82

29-Nov-06 8:52

Hi,

Is it possible to load up a GridView where all rows are in edit mode?

Thanks

Re: Editing all GridView Rows

led mike29-Nov-06 9:15

led mike

29-Nov-06 9:15

Is this an ASP.NET question?

led mike

Re: Editing all GridView Rows

Abbas8229-Nov-06 11:12

Abbas82

29-Nov-06 11:12

I guess so

RichTextBox quandry

Vodstok29-Nov-06 8:38

Vodstok

29-Nov-06 8:38

I have never been able to figure this oneout, or find anything that reliably worked, either.

i am trying to develope an app that uses a richtextbox for input, and has all the options that wordpad does. Now, i realise i may not be able to pull off each and every trick, but there is one in particular that is driving me crazy. in wirdpad, say I have this sentance:

Bold and Italic are font styles.

Now, something i can do very easily is switch individual selections back and forth between one font style and another, so this would be easy:

Bold and Italic are font styles.

the problem is, if i want to do this:

Bold and Italic are font styles.

i get one or the other, basically whichever i selected last. here is the code i am using. rtb is the RichTextBox:

 private void btnBold_Click(object sender, EventArgs e)<br />
        {<br />
            if (rtb.SelectionFont.Bold)<br />
                rtb.SelectionFont = new Font(rtb.SelectionFont.FontFamily, rtb.SelectionFont.Size, FontStyle.Regular);<br />
            else<br />
                rtb.SelectionFont = new Font(rtb.SelectionFont.FontFamily, rtb.SelectionFont.Size, FontStyle.Bold);<br />
            rtb.Select();<br />
        }<br />
<br />
        private void btnItal_Click(object sender, EventArgs e)<br />
        {<br />
            if (rtb.SelectionFont.Italic)<br />
                rtb.SelectionFont = new Font(rtb.SelectionFont.FontFamily, rtb.SelectionFont.Size, FontStyle.Regular);<br />
            else<br />
                rtb.SelectionFont = new Font(rtb.SelectionFont.FontFamily, rtb.SelectionFont.Size, FontStyle.Italic);<br />
            rtb.Select();<br />
        }

I am using C# express and the 2.0 framework. Any ideas?

______________________
Mr Griffin, eleventy billion is not a number... WTF | :WTF:

Re: RichTextBox quandry

NaNg1524129-Nov-06 9:04

NaNg15241

29-Nov-06 9:04

in each one u do not check if it's the other one.
if it is it resets the other one....

think about it.

Re: RichTextBox quandry

Vodstok29-Nov-06 9:34

Vodstok

29-Nov-06 9:34

Granted, that is true, but even if I just set it to italic or bold, like this:

private void btnBold_Click(object sender, EventArgs e)<br />
        {<br />
                rtb.SelectionFont = new Font(rtb.SelectionFont.FontFamily, rtb.SelectionFont.Size, FontStyle.Bold);<br />
            rtb.Select();<br />
        }<br />
<br />
        private void btnItal_Click(object sender, EventArgs e)<br />
        {<br />
                rtb.SelectionFont = new Font(rtb.SelectionFont.FontFamily, rtb.SelectionFont.Size, FontStyle.Italic);<br />
            rtb.Select();<br />
        }

whatever the new fontstyle is, it overrides the existing one. So for example, i have this:

Short sentance

and i highlight like this:
Short sentance

then try setting it to iatlics, rather than getting this:

Short sentance

i get this:
Short sentance

______________________
Mr Griffin, eleventy billion is not a number... WTF | :WTF:

Re: RichTextBox quandry

Anthony Queen29-Nov-06 9:57

Anthony Queen

29-Nov-06 9:57

Try something like this -->

this.richTextBox1.Text = "This is a test";
this.richTextBox1.SelectionStart = 0;
this.richTextBox1.SelectionLength = 7;

System.Drawing.Font currentFont = richTextBox1.SelectionFont;
System.Drawing.FontStyle newFontStyle;
newFontStyle = FontStyle.Bold;
richTextBox1.SelectionFont = new System.Drawing.Font(currentFont.FontFamily, currentFont.Size, newFontStyle);

currentFont = richTextBox1.SelectionFont;
this.richTextBox1.SelectionStart = 5;
this.richTextBox1.SelectionLength = 3;

newFontStyle = FontStyle.Italic | FontStyle.Bold;

richTextBox1.SelectionFont = new System.Drawing.Font(currentFont.FontFamily, currentFont.Size, newFontStyle);

It's only when you look at an ant through a magnifying glass on a sunny day that you realise how often they burst into flames.

Re: RichTextBox quandry

Vodstok29-Nov-06 10:16

Vodstok

29-Nov-06 10:16

Awesome! That certainly got me going in the right direction. Its almost emberassing how long i have tried to get this working....

______________________
Mr Griffin, eleventy billion is not a number... WTF | :WTF:

Re: RichTextBox quandry

Anthony Queen29-Nov-06 10:23

Anthony Queen

29-Nov-06 10:23

Glad to help.

It's only when you look at an ant through a magnifying glass on a sunny day that you realise how often they burst into flames.

DataTable & DataView

Mohammed Elkholy29-Nov-06 7:40

Mohammed Elkholy

29-Nov-06 7:40

i have a dataview it has several rows

how can i pass thes rows to a datatable?

thanks for help Rose | [Rose]

MD_NADA

Re: DataTable & DataView

ed^nrgc29-Nov-06 8:40

ed^nrgc

29-Nov-06 8:40

Isn't your DataView based on a table already?

Re: DataTable & DataView

Mohammed Elkholy29-Nov-06 9:01

Mohammed Elkholy

29-Nov-06 9:01

my dataview is aleady based on dataset but i filter the dataset by dataview
and i want to get the rows in the dataview in datatable

thanks for your help

MD_NADA

Re: DataTable & DataView

Stathread29-Nov-06 9:56

Stathread

29-Nov-06 9:56

What do you mean when you say filter? Also, does the datagrid contain child rows? Why dont you just use your dataset if these rows are already there?

Localization of data

Herhighness29-Nov-06 7:24

Herhighness

29-Nov-06 7:24

My application pulls data from a MySQL database and saves it as CSV file.
I have to localize this. the main requirement is that date and number format should be localized while making the CSV file.

for ex in German, the delimiter should be ";" instead of " ," . and numbers should have , in place of decimal(1.23 should be 1, 23) and also the date should be in correct format.

now the data I am pulling could be of any type, string, single, double, how can I know the type of pulled data, and format it for the installed UI culture before saving it to the CSV file.

I know that I can find out the type of the column pulled, and use that, is there a better an efficient way ?
Any ideas ?

Thanks,
Arti

Re: Localization of data

dead_link29-Nov-06 8:10

dead_link

29-Nov-06 8:10

IMHO the most simple solution will be to write data in binary mode. After that data will be automatically reformatted according to local settings of the target computer while reading.

Strange reaction from a DataGridView

~~~Johnny~~~29-Nov-06 7:05

~~~Johnny~~~

29-Nov-06 7:05

I am having a problem I am not sure why is hapening. In the following code, if I put the line with the Clone() method before the this.datagridSplit.Panel2.Controls.Add(dataGrid); it works well but I get the error No parameterless constructor defined for this object in a MissingMethodException. My guess is that is because the object is occupied on another thread but I am not sure. Note that when the dataGrid is added to a control I fire another event that modifies the bound table of the datagrid. Frown | :(

What a day!

public void SetFinder(ref ComplexObject finderObject) //Type ComplexObject is a typed dataset
{
finderObject.Read();
complexObject = finderObject;
dataGrid = finderObject.FinderDatagrid;
dataGrid.ColumnHeadersVisible = false;
this.datagridSplit.Panel2.Controls.Add(dataGrid);
emptyDataSet = finderObject.Clone();
emptyDataSet.EnforceConstraints = false;
emptyDataSet.Tables[0].Rows.Add(null, null);
emptyDataSet.AcceptChanges();
emptyDataGrid.DataSource = emptyDataSet.Tables[0];
emptyDataGrid.AllowUserToAddRows = false;
emptyDataGrid.Dock = DockStyle.Fill;
emptyDataGrid.RowHeadersVisible = false;
this.datagridSplit.Panel1.Controls.Add(emptyDataGrid);
this.emptyDataGrid.CellValueChanged += new DataGridViewCellEventHandler(emptyDataGrid_CellValueChanged);
this.emptyDataGrid.CellLeave += new DataGridViewCellEventHandler(emptyDataGrid_CellLeave);
}

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