I am creating a custom control, a custom looking TextBox designed to only allow numeric input. It consists of a plain control, with a TextBox as one of it's properties:
class NumericControl : Control
{
private TextBox text;
//rest of the code
}
This TextBox is drawn inside of the control. It all works very nicely, except that when you press enter it makes this horrible DING noise. To fix this, I thought I'd make the TextBox multiline. However, when I do this, because the font size of the TextBox is changed to resize it, the blinking cursor inside the TextBox appears to disappear, which is a problem because then you can't tell by looking at it whether or not it has focus. If I don't change the font size of the TextBox, the cursor appears and acts normally, however I need the font size to change based on the height of the control, otherwise it doesn't look any good.
The code setting the TextBox properties is as follows, and resides within the constructor of my control:
text = new TextBox();
text.AutoSize = false;
text.Left = 10;
text.Top = 2;
text.Text = "0";
text.Multiline = true;
text.BorderStyle = BorderStyle.None;
text.TextChanged += text_TextChanged;
text.LostFocus += text_LostFocus;
this.Controls.Add(text);
The font size is changed inside the OnPaint event, and looks like this:
text.BackColor = Enabled ? Background : SystemColors.Control; //Fixes an issue I had with disabled TextBox BackColor being able to be changed
text.Font = new Font(TextBox.DefaultFont.FontFamily, (float)(rc.Height * 0.7 - 2), FontStyle.Regular);
text.Width = this.Width - 21;
text.Height = this.Height - 4;
How do I both resize the textbox (and font size), and make it multiline while retaining the blinking cursor when it has focus?
Related
first time poster, sorry if something isn't as it should be.
I'm new to Winforms and am trying to build a simple application that will display multiple features of an item (like Size, Composition, etc.). Each Characteristic has a Name, can have a Descritpion, and some can have sub-characteristics (having also a name and sometimes a descritpion).
I want to display them one under the other, with the Name of the feature on a blue background that span the whole width of the container, with the description underneath. The name will be (or have) a button (or similar) that when clicked collapse or expand the description. This must be created at run time because I don't know how many feature an object has until the user generate it.
The issues I'm running in are that either I can't span the blue background the whole width of the container (if using a FlowLayoutPanel), or I have some issue with the Description text being not the right size (either it wraps but is too big, or it doesn't wrap and then I can't see the whole text).
Some things are fixed, mainly the number of main sections (like Size, Composition, Weather, etc.), so I can prepare the skeleton before runtime.
The closest i've been to making it work gives this. This issue here is that the height of the Panel which the description label is embded in is fixed, and if I put in in Autosize, the text don't show (probably because the label is in Fill dock style). Just as information, this is what it looks like when collapsed (this is indeed what I'm looking for)
I know some library exists with collapsible panels, but I'd rather try to make it work without external libraries. Thanks in advance for any help !
This is the code that produces the results in the screenshots :
Panel SizeDescrPanel = new Panel();
SizeDescrPanel.Dock = DockStyle.Top;
//SizeDescrPanel.AutoSize = true;
SizeDescrPanel.AutoSizeMode = AutoSizeMode.GrowAndShrink;
SizeDescrPanel.BackColor = Color.Bisque;
SizePanel.Controls.Add(SizeDescrPanel);
Label SizeDescrLbl = new Label();
SizeDescrLbl.Text = Lorem;
SizeDescrLbl.AutoSize = false;
SizeDescrLbl.Dock = DockStyle.Fill;
SizeDescrLbl.BackColor = Color.BurlyWood;
SizeDescrPanel.Controls.Add(SizeDescrLbl);
/*using(Graphics g = CreateGraphics())
{
SizeF size = g.MeasureString(SizeDescrLbl.Text, SizeDescrLbl.Font, SizePanel.Width);
SizeDescrPanel.Height = (int) Math.Ceiling(size.Height);
}*/
Panel SizeNamePanel = new Panel();
SizeNamePanel.Dock = DockStyle.Top;
SizeNamePanel.BackColor = Color.Cyan;
SizeNamePanel.AutoSize = true;
SizePanel.Controls.Add(SizeNamePanel);
Button SizeNameBtn = new Button();
SizeNameBtn.Text = "<Size Name> ..." + SizeDescrLbl.Height;
SizeNameBtn.TextAlign = ContentAlignment.MiddleLeft;
SizeNameBtn.FlatStyle = FlatStyle.Flat;
SizeNameBtn.AutoSize = true;
SizeNamePanel.Controls.Add(SizeNameBtn);
SizeNameBtn.Click += delegate { HideShowPanel(SizeDescrPanel); };
It,s a test project, so later I'll put that in different methods. What isn't shown here :
I have a main panel set to Fill containing everything.
The text "SIZE" is a label set to Top
Under it is another Panel (SizePanel) that is set to Top and Autosize is at True. This is the Panel inside which I'm puttin my size name and my size description. If I had a subfeature, it would be included (ideally) inside descritpion with the same configuration (button expanding/collapsing the descritpion of the SubFeature)
I am trying to create a Bitmap from a RichTextBox and set it as the background image for a panel, but unfortunately the text is not shown.
Bitmap l_bitmap = new Bitmap(m_control.Width, m_control.Height);
m_control.DrawToBitmap(l_bitmap, new Rectangle(0, 0, l_bitmap.Width, l_bitmap.Height));
m_panel.BackgroundImage = l_bitmap;
m_panel.Refresh();
m_control is my RichTextBox. When I debug, I can see that the control contains the text I wrote, but the bitmap just shows an empty RichTextBox.
I use the same code for other types of controls (Button, CheckBox, TextBox...). The text is shown with no problems.
Well you are trying to create a bitmap from the control. The text you put in there isn't the control, so it won't bother to chow it as bitmap. Try to create a picture from screen (like a screenshot).
Example:
Graphics gr = Graphics.FromImage(l_bitmap);
gr.CopyFromScreen(m_control.PointToScreen(Point.Empty), point.Empty, m_control.Size);
This will make a bitmap from your given points. This will additional show you the text.
EDIT
Maybe you can use this instead. In addition to your idea, I simply put a label onto my panel. (L for Label and P for Panel)
As you can see, the label is empty because I cleared the Text property. Now, when you click one of the buttons below the panel, it will update the label.Text propertie and there will be the text you gave the control.
Here is some example:
As you can see, the label shows the Name of the control. Completly custom as you can see on my source code:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public RichTextBox tmpRtf = new RichTextBox();
//Poor button name incoming...
private void button1_Click(object sender, EventArgs e)
{
if (tmpRtf == null)
tmpRtf = new RichTextBox();
//You can add any text here and it will be shown on the label.
this.tmpRtf.Text = "Richtextbox";
this.UpdatePanel(this.tmpRtf);
}
//Custom method to update the panel for any control. Can pobably be done way better than this, but hey.
private void UpdatePanel(object pControl)
{
//Checks if control is a rtf
if(pControl is RichTextBox)
{
//This is your code! Ay.
Bitmap l_bitmap = new Bitmap(this.panel1.Width / 2, this.panel1.Height / 2);
(pControl as RichTextBox).DrawToBitmap(l_bitmap, new Rectangle(0, 0, l_bitmap.Width, l_bitmap.Height));
this.tmpRtf.BackColor = Color.LightGray;
this.panel1.BackgroundImage = l_bitmap;
this.panel1.BackgroundImageLayout = ImageLayout.Center;
this.labelControlName.Text = this.tmpRtf.Text;
this.panel1.Refresh();
}
}
}
Its not possible to show text on a control thats not visualized. But you can build a workaround! Or, instead of taking a picture you can simply create the control on top of it, that will also show the Text and maybe the user can test it (e.g. click on buttons, look at the control behaviour).
Hopefully this is something to get you inspired that there are always more ways to accomplish.
I have tried to create a radiobutton dynamically and add it to groupbox/form, but the whole text associated with the radiobutton is not getting displayed. When the radiobutton is added from the designer, the whole text is getting displayed. For dynamically adding radio button am I missing anything or are there any ways to do it?
Please find the sample code below:
public partial class Form1 : Form
{
private void SelectMicrophone_Load(object sender, EventArgs e)
{
System.Windows.Forms.RadioButton r1 = new System.Windows.Forms.RadioButton(); //created a radiobutton
r1.Name = "Microphone(RealTex";
r1.Text = "Microphone(RealTex";
r1.Location = new System.Drawing.Point(15, 15);
this.groupBox1.Controls.Add(r1);
When you set the text property in the designer, it adjust the radio button to the new size to cover the width of the text. By default I think the width is 90 and with the text above it is resized to a width of 124. So when you create the object at runtime, it is probably just keeping the width to 90. You can however just set r1.Width = 124 before adding it to your controls collection.
Keep in mind that you may not know the length each time so you could either set the width to the maximum size that you need or use the TextRender's .MeasureText method to get the size of the text and then just add 20 to that to cover the graphic of the radio button circle that also appears and set the result of the X property to your width before adding the radiobutton to the collection.
RadioButton r1 = new RadioButton();
r1.Text = "This is short text";
//Measure the Text property and get the width and add 20 to accomodate the circle
r1.Width = (TextRenderer.MeasureText(r1.Text, r1.Font)).Width + 20;
r1.Location = new Point(15, 15);
this.Controls.Add(r1);
//Just another RB with even longer text.
r1 = new RadioButton();
r1.Text = "This is even longer text that we want to show";
r1.Width = (TextRenderer.MeasureText(r1.Text, r1.Font)).Width + 20;
r1.Location = new Point(15, 35);
this.Controls.Add(r1);
For my single line Textbox, I set is Border = None. On doing this, the height turns very small. I can't programamtically set the height of the textbox. If I set any border, then again its fine, but I don't want any border. Even the text is not visible completely - so the font size is already bigger the the textbox height.
I tried creating a custom textbox, and set the Height of it, but it has no effect. How to handle this situation? Any help is highly appreciated.
There is a simple way not to create a new class.
In Designer.cs file:
this.textBox1.AutoSize = false;
this.textBox1.Size = new System.Drawing.Size(228, 25);
And that's all.
TextBox derives from Control, which has an AutoSize property, but the designers have hidden the property from the PropertyGrid and Intellisense, but you can still access it:
public class TextBoxWithHeight : TextBox {
public TextBoxWithHeight() {
base.AutoSize = false;
}
}
Rebuild and use.
TextBox controls automatically resize to fit the height of their Font, regardless of the BorderStyle you choose. That's part of the defaults used by Visual Studio.
By changing the Multiline, you can override the Height.
this.textBox1.Font = new System.Drawing.Font("Microsoft Sans Serif",
26.25F,
System.Drawing.FontStyle.Regular,
System.Drawing.GraphicsUnit.Point,
((byte)(0)));
this.textBox1.Location = new System.Drawing.Point(373, 502);
// this is what makes the height 'stick'
this.textBox1.Multiline = true;
// the desired height
this.textBox1.Size = new System.Drawing.Size(100, 60);
Hope this helps.
I just created this case in an empty project and don't see the result you are describing.
When the BorderStyle is none, the display area of the Textbox auto-sizes to the font selected. If I then set Multiline = true, I can change the height portion of the Size property and the change sticks.
Perhaps another portion of your code is modifying the height? A resize event handler perhaps?
My suggestions:
Post the relevant portions of your code
Try to reproduce the issue in an empty WinForms project (as I just did)
I find the best solution is to subclass the Textbox and expose the hidden AutoSize there:
public class TextBoxWithHeight : TextBox
{
public bool Auto_Size
{
get { return this.AutoSize; }
set { this.AutoSize = value; }
}
}
Now you can set the Autosize on or off using the object inspector in the visual designer or in code, whatever you prefer.
Just select your textbox and go to properties then increase your font size.. DONE !!!
How do I change the height of a textbox ?
Neither of the below work:
this.TextBox1.Size = new System.Drawing.Size(173, 100);
or
this.TextBox1.Size.Height = 100;
I wanted to be able to change the single line text box height to fit a font size on it without using multi-line if possible.
Go into yourForm.Designer.cs
Scroll down to your textbox. Example below is for textBox2 object.
Add this
this.textBox2.AutoSize = false;
and set its size to whatever you want
this.textBox2.Size = new System.Drawing.Size(142, 27);
Will work like a charm - without setting multiline to true, but only until you change any option in designer itself (you will have to set these 2 lines again).
I think, this method is still better than multilining. I had a textbox for nickname in my app and with multiline, people sometimes accidentially wrote their names twice, like Thomas\nThomas (you saw only one in actual textbox line). With this solution, text is simply hiding to the left after each char too long for width, so its much safer for users, to put inputs.
There are two ways to do this :
Set the textbox's "multiline" property to true, in this case you don't want to do it so;
Set a bigger font size to the textbox
I believe it is the only ways to do it; the bigger font size should automatically fit with the textbox
You can set the MinimumSize and/or the MaximumSize properties of the textbox. This does not affect the size immediately, but when you resize the textbox in the forms designer, the size will automatically be adjusted to satisfy the minimum/maximum size constraints. This works even when Multiline is set to false and does not depend on the font size.
Just found a great little trick to setting a custom height to a textbox.
In the designer view, set the minimumSize to whatever you desire, and then completely remove the size setting. This will cause the designer to update with the new minimum settings!
set the minimum size property
tb_01.MinimumSize = new Size(500, 300);
This is working for me.
Try the following :)
textBox1.Multiline = true;
textBox1.Height = 100;
textBox1.Width = 173;
Steps:
Set the textboxes to multiline
Change the height
Change the font size. (so it fit into the big textboxes)
Set the textboxes back to non-multiline
public partial class MyTextBox : TextBox
{
[DefaultValue(false)]
[Browsable(true)]
public override bool AutoSize
{
get
{
return base.AutoSize;
}
set
{
base.AutoSize = value;
}
}
public MyTextBox()
{
InitializeComponent();
this.AutoSize = false;
}
}
May be it´s a little late. But you can do this.
txtFoo.Multiline = true;
txtFoo.MinimumSize = new Size(someWith,someHeight);
I solved it that way.
AutoSize, Minimum, Maximum does not give flexibility. Use multiline and handle the enter key event and suppress the keypress. Works great.
textBox1.Multiline = true;
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
e.Handled = true;
e.SuppressKeyPress = true;
}
}
You can put it inside a panel that has the same back color with your desired height. This way has this advantage that the text box can center horizontally, which is not provided by other solutions.
You can make it even more natural by using the following methods
private void textBox1_Enter(object sender, EventArgs e)
{
panelTextBox.BorderStyle = BorderStyle.FixedSingle;
}
private void textBox1_Leave(object sender, EventArgs e)
{
panelTextBox.BorderStyle = BorderStyle.None;
}
The Simplest Way to do that
Right click on the TextBox.
Go to properties.
Set Multiline = True.
Now you will be able to resize the TextBox vertically as you wish.
for me, the best approach is remove border of the textbox, and place it inside a Panel, which can be customized as you like.
The following code added in your constructor after calling InitializeComponent() will make it possible to programmatically set your text box to the correct height without a) changing the Multiline property, b) having to hardcode a height, or c) mucking with the Designer-generated code. It still isn't necessarily as clean or nice as doing it in a custom control, but it's fairly simple and robust:
if (txtbox.BorderStyle == BorderStyle.None)
{
txtbox.BorderStyle = BorderStyle.FixedSingle;
var heightWithBorder = txtbox.ClientRectangle.Height;
txtbox.BorderStyle = BorderStyle.None;
txtbox.AutoSize = false;
txtbox.Height = heightWithBorder;
}
I decided to make it cleaner and easier to use by putting it in a static class and make it an extension method on TextBox:
public static class TextBoxExtensions
{
public static void CorrectHeight(this TextBox txtbox)
{
if (txtbox.BorderStyle == BorderStyle.None)
{
txtbox.BorderStyle = BorderStyle.FixedSingle;
var heightWithBorder = txtbox.ClientRectangle.Height;
txtbox.BorderStyle = BorderStyle.None;
txtbox.AutoSize = false;
txtbox.Height = heightWithBorder;
}
}
}
Some of you were close but changing designer code like that is annoying because you always have to go back and change it again.
The original OP was likely using an older version of .net because version 4 autosizes the textbox height to fit the font, but does not size comboboxes and textboxes the same which is a completely different problem but drew me here.
This is the problem I faced when placing textboxes next to comboboxes on a form. This is a bit irritating because who wants two controls side-by-side with different heights? Or different fonts to force heights? Step it up Microsoft, this should be simple!
I'm using .net framework 4 in VS2012 and the following was the simplest solution for me.
In the form load event (or anywhere as long as fired after InitializeComponent): textbox.AutoSize = false Then set the height to whatever you want. For me I wanted my text boxes and combo boxes to be the same height so textbox.height = combobox.height did the trick for me.
Notes:
1) The designer will not be affected so it will require you to start your project to see the end result, so there may be some trial and error.
2) Align the tops of your comboboxes and textboxes if you want them to be aligned properly after the resize because the textboxes will grow down.
This is what worked nicely for me since all I wanted to do was set the height of the textbox. The property is Read-Only and the property is in the Unit class so you can't just set it. So I just created a new Unit and the constructor lets me set the height, then set the textbox to that unit instead.
Unit height = txtTextBox.Height;
double oldHeight = height.Value;
double newHeight = height.Value + 20; //Added 20 pixels
Unit newHeightUnit = new Unit(newHeight);
txtTextBox.Height = newHeightUnit;
You can make multiline : false and then just change the text size on the text box then the height will automatically increment
you can also change you can also change MinimumSize
So after having the same issue with not being able to adjust height in text box, Width adjustment is fine but height never adjusted with the above suggestions (at least for me), I was finally able to take make it happen. As mentioned above, the issue appeared to be centered around a default font size setting in my text box and the behavior of the text box auto sizing around it. The default font size was tiny. Hence why trying to force the height or even turn off autosizing failed to fix the issue for me.
Set the Font properties to the size of your liking and then height change will kick in around the FONT size, automatically. You can still manually set your text box width. Below is snippet I added that worked for me.
$textBox = New-Object System.Windows.Forms.TextBox
$textBox.Location = New-Object System.Drawing.Point(60,300)
$textBox.Size = New-Object System.Drawing.Size(600,80)
$textBox.Font = New-Object System.Drawing.Font("Times New Roman",18,[System.Drawing.FontStyle]::Regular)
$textBox.Form.Font = $textbox.Font
Please note the Height value in '$textBox.Size = New-Object System.Drawing.Size(600,80)' is being ignored and the FONT size is actually controlling the height of the text box by autosizing around that font size.
All you have to do is enable the multiline in the properties window, put the size you want in that same window and then in your .cs after the InitializeComponent put txtexample.Multiline = false; and so the multiline is not enabled but the size of the txt is as you put it.
InitializeComponent();
txtEmail.Multiline = false;
txtPassword.Multiline = false;
I think this should work.
TextBox1.Height = 100;