Add a Label over Picturebox

问题

I am trying to write some text over my picturebox so I thought the easiest and best thing to do is draw label over it. This is what I did:

PB = new PictureBox();
PB.Image = Properties.Resources.Image; 
PB.BackColor = Color.Transparent;
PB.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
PB.Size = new System.Drawing.Size(120, 30);
PB.Location = new System.Drawing.Point(100, 100);
lblPB.Parent = PB;
lblPB.BackColor = Color.Transparent;
lblPB.Text = "Text";
Controls.AddRange(new System.Windows.Forms.Control[] { this.PB });

I get blank page with no PictureBoxes. What am I doing wrong?

回答1:

While all these answers work, you should consider opting for a cleaner solution. You can instead use the picturebox's Paint event:

PB = new PictureBox();
PB.Paint += new PaintEventHandler((sender, e) =>
{
    e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
    e.Graphics.DrawString("Text", Font, Brushes.Black, 0, 0);
});
//... rest of your code

Edit To draw the text centered:

PB.Paint += new PaintEventHandler((sender, e) =>
{
    e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;

    string text = "Text";

    SizeF textSize = e.Graphics.MeasureString(text, Font);
    PointF locationToDraw = new PointF();
    locationToDraw.X = (PB.Width / 2) - (textSize.Width / 2);
    locationToDraw.Y = (PB.Height / 2) - (textSize.Height / 2);

    e.Graphics.DrawString(text, Font, Brushes.Black, locationToDraw);
});

回答2:

Instead of

lblPB.Parent = PB;

PB.Controls.Add(lblPB);

回答3:

You have to add the control to the PictureBox. So:

PB.Controls.Add(lblPB):

EDIT:

I get blank page with no PictureBoxes.

You didn't see the picturebox because it has the same backcolor of the Form. So try to set BorderStyle and the BackColor. Another mistake is that probably you haven't set the location of the label. So:

PB.BorderStyle = BorderStyle.FixedSingle;
PB.BackColor = Color.White;
lblPB.Location = new Point(0,0);

回答4:

I tried this. (no use picturebox)

Use "Panel" control first
Set panel's BackgroundImage & BackgroundImageLayout (Stretch)
Add Label Inside panel

that's all

回答5:

There's another way to do it. It's very simple but probably not the best one. (I'm a beginner, so I like things simple)

If I've understood your question right, you want to put the label above/on top of the pictureBox. The following line of code will do that.

myLabelsName.BringToFront();

Now, your question were already answered, but maybe this can help somebody else.

来源：https://stackoverflow.com/questions/10400943/add-a-label-over-picturebox

标签

forms

label

picturebox