我试图创建一个带有边框的自定义面板,其颜色可以更改,以便突出显示"小组在某些条件下。
小组还需要通过文本传达某些信息。为此,我在Panel中添加了一个Label。我已尝试使用规定的方法对Label进行居中,但出于某种原因,它始终将其放在Panel的左上角。我无法将Label的Dock设置为Fill,因为这会掩盖已创建的自定义边框。所以我需要做到这一点,以便Label适合边界。
Label的Anchor设置为None,其位置为
new Point((ClientSize.Width - Size.Width)/2, (ClientSize.Height - Size.Height)/2);
自定义Panel的代码是:
public class CustomPanel : Panel
{
public CustomPanel(int borderThickness, Color borderColor) : base()
{
SetStyle(ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw, true);
BackColor = SystemColors.ActiveCaption;
BorderStyle = BorderStyle.FixedSingle;
Size = new Size(45, 45);
Margin = new Padding(0);
BorderThickness = borderThickness;
BorderColor = borderColor;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (BorderStyle == BorderStyle.FixedSingle)
{
int halfThickness = BorderThickness / 2;
using (Pen p = new Pen(BorderColor, BorderThickness))
{
e.Graphics.DrawRectangle(p, new Rectangle(halfThickness,
halfThickness,
ClientSize.Width - BorderThickness, ClientSize.Height - BorderThickness));
}
}
}
public int BorderThickness { get; set; }
public Color BorderColor { get; set; }
}
表格代码是:
private void NewPanelTest_Load(object sender, EventArgs e)
{
CustomPanel cp = new CustomPanel(3, Color.Black);
// Create new Label
Label info = new Label()
{
Size = new Size(30, 30),
Text = "Info",
Anchor = AnchorStyles.None,
TextAlign = ContentAlignment.MiddleCenter,
Enabled = false,
Font = new Font("Microsoft Sans Serif", 6),
ForeColor = Color.White,
Location = new Point(ClientSize.Width/2 - Width/2, ClientSize.Height/2 - Height/2)
};
cp.Controls.Add(info);
this.Controls.Add(cp);
}
编辑:我已经查看了类似的问题并尝试更改标签的属性,但没有结果。
// Create new Label
Label info = new Label()
{
// Same code as before
// Different code
Left = (this.ClientSize.Width - Size.Width) / 2,
Top = (this.ClientSize.Height - Size.Height) / 2,
//Location = new Point(ClientSize.Width/2 - Width/2, ClientSize.Height/2 - Height/2)
};
我也尝试更改Panel的Padding,也没有结果。
Padding = new Padding(5);
编辑:尝试以编程方式将Label放在Panel的中心(产生X = 0,Y = 0的结果)
// Create new Label
Label info = new Label()
{
// Same code as before (excluding "Left", "Top", and "Location")
};
int X = (info.ClientSize.Width - info.Width) / 2;
int Y = (info.ClientSize.Height - info.Height) / 2;
info.Location = new Point(X, Y);
MessageBox.Show(info.Location.ToString());
cp.Controls.Add(info);
答案 0 :(得分:6)
我们可以通过简单的步骤实现这个目标
现在将标签置于面板中间。
int x = (panel1.Size.Width - label1.Size.Width) / 2;
label1.Location = new Point(x, label1.Location.Y);
答案 1 :(得分:1)
将控件垂直和水平放置在容器中心
最简单的选择是使用TableLayoutPanel
,其中包含1列和1行而不是Panel
。将Label
放入其中,然后将Anchor
标签设置为None
,使标签始终垂直和水平居中。
另外,为了绘制自定义边框,它足以处理CellPaint
TableLayoutPanel
事件并绘制自定义边框:
private void tableLayoutPanel1_CellPaint(object sender, TableLayoutCellPaintEventArgs e)
{
var r = e.CellBounds;
r.Width--;
r.Height--;
e.Graphics.DrawRectangle(Pens.Red, r);
}
答案 2 :(得分:0)
嘿,这个问题很容易解决。我假设将来你可能有一些你可能需要居中的标签,所以我做了这个功能,接受你想要居中的标签和父面板。此代码适用于Visual C#Windows窗体应用程序。在调用此函数之前,我们需要做一些事情。我们需要:
这是您需要为我们的函数编写的代码
public void Centroid(Label label, Panel parent)
{
int x = (parent.Size.Width - label.Size.Width) / 2;
label.Location = new Point(x, label.Location.Y);
}
并调用你必须输入的函数:Centroid(label1,panel1); 假设您有一个名为label1&的标签。一个名为panel 1的面板。只要它是标签和面板,您就可以用这些值替换这些值。
希望这可以帮助你:)
答案 3 :(得分:0)
我这样对面板和标签进行了水平居中对齐:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
this.AutoScaleDimensions = new System.Drawing.SizeF(12F, 23F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(1401, 462);
this.Controls.Add(this.label1);
this.Font = new System.Drawing.Font("Times New Roman", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Margin = new System.Windows.Forms.Padding(6, 5, 6, 5);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
int borderThickness = 5;
Color borderColor = Color.Cyan;
CustomPanel panel1 = new CustomPanel(borderThickness, borderColor);
panel1.BackColor = Color.Yellow;
panel1.Location = new Point(400, 30);
panel1.Size = new Size(300, 300);
panel1.Parent = this;
this.Controls.Add(panel1);
label1.Name = "label1";
label1.TabIndex = 0;
label1.AutoSize = true;
label1.ForeColor = Color.Black;
label1.Text = "this is the text whose center I want to align";
label1.Location = new Point(panel1.Location.X + panel1.Width / 2 - label1.Width / 2, 80);
if (this.Controls.Contains(label1))
{
label1.BringToFront();
}
}
private Label label1;
}
自从我发布答案以来,我发现为了使标签与面板的中心对齐,请声明:
this.Controls.Add(label1);
必须位于以下语句之后:
label1 = new Label();
在声明之前:
label1.Location = new Point(panel1.Location.X + panel1.Width / 2 - label1.Width / 2, 80);