I'm making a calculator in c#. I know the logic required to make a calculator. But the problem I'm facing is with the UI, I want to make the text in my TextBox Right and Bottom, while there is TextAlign property which makes the text in the TextBox align to right, I'm having trouble making it align to the bottom?.I really tried finding an answer.
but I want something like this
Also how to move the text in the textbox slightly upper when I press any operator?
Assuming the fact that you only use the TextBox for displaying the user input, a Label will allow for better use of what you want.
The Label supports a wider use of TextAlign so you could use
Label1.TextAlign = ContentAlignment.BottomRight;
If you want to create multiple lines inside the label, you can use Environment.NewLine to achieve that for example. But a StringBuilder and using AppendLine will probably work too.
If you really need to use a TextBox to achieve your needs, your best option would probably be to write a custom TextBox which supports your wanted text align.
Think this is possible with a RichTextBox but it would be a long work around. I would suggest using a Label. To align the text to the bottom right in a label you can use:
label.TextAlign = ContentAlignment.BottomRight;
To change the look of the Label you can use:
label.BackColor = Color.White;
label.BorderStyle = BorderStyle.FixedSingle;
To change the label from looking like a single line:
label.AutoSize = false;
label.Size = new Size(100,100)
I have a RichTextBox in a WPF application that serves as an output container for status updates. Each line added is colored based on it's informational level (warning-yellow, info-gray and so on).
Paragraph currentStatus = new Paragraph(new Run("ERROR: Couldn't find stuffs."));
currentStatus.Foreground = System.Windows.Media.Brushes.Red;
List myList = new List();
myList.ListItems.Add(new ListItem(currentStatus));
rtbStatus.Document.Blocks.Add(myList); // existing rich textbox
Though it is technically working, after hours of digging I still have a few formatting problems I can't seem to over-come or research out:
I want the list to be inverted, with the most recent 'post' at the top. I have been able to achieve this a couple of different ways, but each at a cost of losing the previous color formatting to the default foreground color of the control (the app has a visual buffer of about 10 lines when spacing is ideal that needs to retain the color applied).
I want the line spacing to be normal, w/o padding between lines. There is enough room for almost 2 more lines between each 'post' when using a list and I am looking for something resembling a textblock's multi-line spacing (see screen linkage below).
I'd love to get rid of the bullet points if a list is the way to go.
A couple notes: This all has to be done on the back-end, and I would like to look at a smooth auto-scrolling animation as a future feature release, though I haven't researched it yet (off-thread topic).
Now, everything I am reading leads me to believe a richTextBox>flowDocument>list is my best solution as I couldn't figure out how leverage the AppendText() method with a line break (environment.NewLine works, but has an even greater amount of padding between lines) nor work out the color dynamics when using other controls, but I am a novice in the C# world.
Please tell me if I am doing this the hard way first and foremost. But if anyone has ideas on how to achieve the above it'd be greatly appreciated.
Image of the above syntax:
Image of the desired spacing results using textblock:
Thanks in advance.
I found some properties that allowed me to accomplish this, so I removed the list and after some tweaking came up with the below:
// Status Update
public void UpdateStatus(string eventLevel, string message)
{
Paragraph currentStatus = new Paragraph(new Run(message));
if (eventLevel == "info")
currentStatus.Foreground = System.Windows.Media.Brushes.Gray;
if (eventLevel == "warning")
currentStatus.Foreground = System.Windows.Media.Brushes.Yellow;
if (eventLevel == "error")
currentStatus.Foreground = System.Windows.Media.Brushes.Red;
if (eventLevel == "highlight")
currentStatus.Foreground = System.Windows.Media.Brushes.CornflowerBlue;
currentStatus.LineHeight = 1;
rtbStatus.Document.Blocks.InsertBefore(rtbStatus.Document.Blocks.FirstBlock, currentStatus);
}
and can now append colored lines to the 'top' with a minimal line space:
UpdateStatus("error", "My custom error message");
I'm making an RPG-style text-based game. Currently it is in a Console Application, but I would rather move it to a Windows Form Application, for some added features and fanciness. This brings up a few issues.
Colors differentiate the types of messages, so color is important. I found this on another question:
int length = richTextBox.TextLength; // at end of text
richTextBox.AppendText(mystring);
richTextBox.SelectionStart = length;
richTextBox.SelectionLength = mystring.Length;
richTextBox.SelectionColor = Color.Red;
This seems to add the color after the text. Is there a better way to go about colors? Also, what if I want multiple different colors on one line? That complicates things. (It would be best if I could use color codes to designate the colors in the strings themselves, something like &&4this is red &&fthis is white &&0this is black, but I suppose that might just over-complicate things.)
Currently, the input box is a simple text box. When you press enter, nothing happens. I want enter to clear the text box and output a string that I can work with (not necessarily add to the rich text box).
What I assumed in my comment is true, just tested it. Change your code to this:
Color prevColor = richTextBox.SelectionColor;
richTextBox.SelectionColor = Color.Red;
richTextBox.AppendText(mystring);
richTextBox.SelectionColor = prevColor;
I'm concatenating a string that sometimes is long enough for it not to fit in a label control. How can i make it autoscroll to the rightside so i always see the end of the string?
While I'm sure there are ways of doing, I have to ask, why? I think it would look and/or work very badly and probably confuse the user.
Why not have the text get trimmed with an ellipse (...) at the end and show a tooltip on the label?
using System.Windows.Forms;
var label = new Label();
label.AutoSize = false;
label.AutoEllipsis = true;
label.Text = "This text will be too long to display all together.";
var labelToolTip = new ToolTip();
labelToolTip.SetToolTip(label, label.Text);
Now the tooltip will show the full text when the user hovers over it. Since the text in the label will be truncated and end in an ellipse, the user should know to hover over for more info (usually the standard way).
The TextAlign property allows you to specify the alignment. If you right-justify it with this, the right side of the text will always be visible. However, if you want it to be left or center justified and still have the behavior you describe, I suspect you will need to perform some measurement using Graphics.MeasureString to determine if the text fits and change the alignment dynamically.
AFAIK there's no way to scroll a label. A hack would be to use a TextBox (read-only, turn off border) then use SendKeys.Send() to move the cursor to the end of the text. Something like:
textBox1.Focus();
SendKeys.SendWait("{END}");
To get the text to not show up as selected I had to change it's position in the tab order (so that it wasn't 1) but that may not be a problem in your case.
I'm looking for a way to display multiple colors in a single C#/.NET label. E.g the label is displaying a series of csv separated values that each take on a color depending on a bucket they fall into. I would prefer not to use multiple labels, as the values are variable length and I don't want to play with dynamic layouts. Is there a native support for this?
There is no native control in .NET that does this. Your best bet is to write your own UserControl (call it RainbowLabel or something). Normally you would have a custom label control inherit directly from Label, but since you can't get multi-colored text in one label, you would just inherit from UserControl.
For rendering the text, your UserControl could split the text on commas and then dynamically load a differently-colored Label for each chunk. A better way, however, would be to render the text directly onto your UserControl using the DrawString and MeasureString methods in the Graphics namespace.
Writing UserControls in .NET is really not difficult, and this kind of unusual problem is exactly what custom UserControls are for.
Update: here's a simple method you can use for rendering the multi-colored text on a PictureBox:
public void RenderRainbowText(string Text, PictureBox pb)
{
// PictureBox needs an image to draw on
pb.Image = new Bitmap(pb.Width, pb.Height);
using (Graphics g = Graphics.FromImage(pb.Image))
{
// create all-white background for drawing
SolidBrush brush = new SolidBrush(Color.White);
g.FillRectangle(brush, 0, 0,
pb.Image.Width, pb.Image.Height);
// draw comma-delimited elements in multiple colors
string[] chunks = Text.Split(',');
brush = new SolidBrush(Color.Black);
SolidBrush[] brushes = new SolidBrush[] {
new SolidBrush(Color.Red),
new SolidBrush(Color.Green),
new SolidBrush(Color.Blue),
new SolidBrush(Color.Purple) };
float x = 0;
for (int i = 0; i < chunks.Length; i++)
{
// draw text in whatever color
g.DrawString(chunks[i], pb.Font, brushes[i], x, 0);
// measure text and advance x
x += (g.MeasureString(chunks[i], pb.Font)).Width;
// draw the comma back in, in black
if (i < (chunks.Length - 1))
{
g.DrawString(",", pb.Font, brush, x, 0);
x += (g.MeasureString(",", pb.Font)).Width;
}
}
}
}
Obviously this will break if you have more than 4 comma-delimited elements in your text, but you get the idea. Also, there appears to be a small glitch in MeasureString that makes it return a width that is a couple pixels wider than necessary, so the multi-colored string appears stretched out - you might want to tweak that part.
It should be straightforward to modify this code for a UserControl.
Note: TextRenderer is a better class to use for drawing and measuring strings, since it uses ints. Graphics.DrawString and .MeasureString use floats, so you'll get off-by-a-pixel errors here and there.
Update: Forget about using TextRenderer. It is dog slow.
You could try using a RichTextBox so that you can get multiple colors for the string and then make it read only and remove the border. Change the background color to the same as the Form it is on and you might get away with it.
As an alternative, you might do this as rtf or html in a suitable control (such as WebBrowser). It would probably take a bit more resources that you'd ideally like, but it'll work fairly quickly.
If you are building your Windows app for people with XP and up, you can use WPF. Even if it's a Windows Forms app, you can add a WPF UserControl.
I would then use a Label, and set the "Foreground" property to be a gradient of colors.
Or, in Windows Forms (no WPF), you could just use a "Flow Panel", and then in a for loop add multiple Labels as segments of your sentense... they will all "flow" together as if it was one label.
I'm using colored labels quite often to mark keywords in red color etc.
Like in Phil Wright's answer I use a RichTextBox control, remove the border and set the background color to SystemColors.Control.
To write colored text the control is first cleared and then I use this function to append colored text:
private void rtb_AppendText(Font selfont, Color color, Color bcolor,
string text, RichTextBox box)
{
// append the text to the RichTextBox control
int start = box.TextLength;
box.AppendText(text);
int end = box.TextLength;
// select the new text
box.Select(start, end - start);
// set the attributes of the new text
box.SelectionColor = color;
box.SelectionFont = selfont;
box.SelectionBackColor = bcolor;
// unselect
box.Select(end, 0);
// only required for multi line text to scroll to the end
box.ScrollToCaret();
}
If you want to run this function with "mono" then add a space before every new colored text, or mono will not set new the color correctly. This is not required with .NET
Usage:
myRtb.Text = "";
rtb_AppendText(new Font("Courier New", (float)10),
Color.Red, SystemColors.Control, " my red text", myRtb);
rtb_AppendText(new Font("Courier New", (float)10),
Color.Blue, SystemColors.Control, " followed by blue", myRtb);
Slightly off topic ... You could check also:
generate html color table
model colors in sql
the result
You can simply use multiple labels. Set the font properties you want and then use the left. top and width properties to display the words you want displayed differently. This is assuming you are using windows forms.
Try this,
labelId.Text = "Successfully sent to" + "<a style='color:Blue'> " + name + "</a>";
There is no native support for this; you will either have to use multiple labels or find a 3rd-party control that will provide this functionality.
I don't think so. You should create one yourself.
As per your Question your requirement is simple like
lable.Text = "This color is Red", So it have to display text like this
"The color is" will be in Blue and "Red" will be red color ..
This can be done like this
lable.Text = "<span style='Color:Blue'>" + " The color is " +"</span>" + "<span style='Color:Red'>"Red"</span>"