Don’t wrap in Label（C#）

原創噢。

重寫“重畫”方法，如果內容過長，則自動截取，只顯示一行能顯示下的內容。

protected override void OnPaint(PaintEventArgs e)
{
    bool overMaxLength = false;

    if (!canWordWrap)
    {
        SizeF thisSize = e.Graphics.MeasureString(this.Text, this.Font);

        string text = this.Text;

        while (thisSize.Width + e.Graphics.MeasureString("a", this.Font).Width >
            this.Width + this.Margin.Left + this.Margin.Right)
        {
            text = text.Substring(0, text.Length – 1);
            thisSize = e.Graphics.MeasureString(text, this.Font);
            overMaxLength = true;
        }

        //if (overMaxLength)
        //{
        //    this.realText = this.Text;
        //}

        //this.Text = text;

        if (overMaxLength)
        {
             Rectangle face = new Rectangle();
            face.X = 0;
            face.Y = 0;
            face.Width = this.Width;
            face.Height = this.Height;

            StringFormat sf = new StringFormat();
            sf.Alignment = TranslateAlignment(this.TextAlign);
            sf.LineAlignment = TranslateLineAlignment(this.TextAlign);

            e.Graphics.DrawString(text, this.Font, new SolidBrush(this.ForeColor), face, sf);
        }
    }
    else
    {
        this.realText = this.Text;
    }

    if (!overMaxLength)
    {
        base.OnPaint(e);
    }
}