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c# - 隐藏 DateTimePicker 的文本和 Usercontrol 调整大小

转载 作者:太空狗 更新时间:2023-10-29 20:34:42 25 4
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我有一个用户控件,它有一个 DateTimePicker 覆盖单行文本框 (Tb)
覆盖 DateTimePicker 的文本部分。文本框 Tb(绿色)被锚定 (L T R B)。

Datepicker  overlaid with textbox

调整用户控件大小时出现问题。
覆盖的日期时间选择器显示在文本 Tb 后面。

The overlaid datetimepicker shows up behind the green textbox Tb.

目前用户控件是 242(W) x 20(H) 。当控件的大小调整到 100(宽度)以下时会出现问题。

我尝试将 CustomFormat 设置为 ""的空白文本,但用户控件支持许多 datetimepicker 功能,因此这不是一个选项。

我尝试在用户控件上设置最小尺寸,但这也不起作用。

编辑:
该控件已在少数应用程序中使用。在这些应用程序中,最小控件的大小是 90X20,而我们现在设置的最小大小是 97x20。
VS 设计器是否会在更改后将现有控件的大小调整为 97x20?
如何实现这种效果(重新调整为 97x20)?

编辑 ****添加最小尺寸后的代码****

namespace WindowsFormsApplication1
{
partial class CDatePicker
{
private System.ComponentModel.IContainer components = null;


protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}

#region Component Designer generated code


private void InitializeComponent()
{
this.splitContainer1 = new System.Windows.Forms.SplitContainer();
this.datepanel = new System.Windows.Forms.Panel();
this.datetxt = new System.Windows.Forms.TextBox();
this.dateTimePicker1 = new System.Windows.Forms.DateTimePicker();
this.timepanel = new System.Windows.Forms.Panel();
this.timetxt = new System.Windows.Forms.TextBox();
((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).BeginInit();
this.splitContainer1.Panel1.SuspendLayout();
this.splitContainer1.Panel2.SuspendLayout();
this.splitContainer1.SuspendLayout();
this.datepanel.SuspendLayout();
this.timepanel.SuspendLayout();
this.SuspendLayout();
//
// splitContainer1
//
this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer1.Location = new System.Drawing.Point(0, 0);
this.splitContainer1.Name = "splitContainer1";
//
// splitContainer1.Panel1
//
this.splitContainer1.Panel1.Controls.Add(this.datepanel);
this.splitContainer1.Panel1MinSize = 105;
//
// splitContainer1.Panel2
//
this.splitContainer1.Panel2.Controls.Add(this.timepanel);
this.splitContainer1.Size = new System.Drawing.Size(236, 20);
this.splitContainer1.SplitterDistance = 178;
this.splitContainer1.SplitterWidth = 1;
this.splitContainer1.TabIndex = 0;
//
// datepanel
//
this.datepanel.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.datepanel.Controls.Add(this.datetxt);
this.datepanel.Controls.Add(this.dateTimePicker1);
this.datepanel.Location = new System.Drawing.Point(0, 0);
this.datepanel.Margin = new System.Windows.Forms.Padding(0);
this.datepanel.Name = "datepanel";
this.datepanel.Size = new System.Drawing.Size(175, 20);
this.datepanel.TabIndex = 0;
//
// datetxt
//
this.datetxt.BackColor = System.Drawing.Color.Gainsboro;
this.datetxt.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.datetxt.Location = new System.Drawing.Point(0, 0);
this.datetxt.MinimumSize = new System.Drawing.Size(60, 20);
this.datetxt.Name = "datetxt";
this.datetxt.Size = new System.Drawing.Size(71, 20);
this.datetxt.TabIndex = 3;
this.datetxt.Text = "date";
//
// dateTimePicker1
//
this.dateTimePicker1.Dock = System.Windows.Forms.DockStyle.Fill;
this.dateTimePicker1.Format = System.Windows.Forms.DateTimePickerFormat.Short;
this.dateTimePicker1.Location = new System.Drawing.Point(0, 0);
this.dateTimePicker1.Margin = new System.Windows.Forms.Padding(0);
this.dateTimePicker1.MinimumSize = new System.Drawing.Size(65, 20);
this.dateTimePicker1.Name = "dateTimePicker1";
this.dateTimePicker1.Size = new System.Drawing.Size(175, 20);
this.dateTimePicker1.TabIndex = 2;
this.dateTimePicker1.Value = new System.DateTime(2012, 11, 15, 0, 0, 0, 0);
//
// timepanel
//
this.timepanel.Controls.Add(this.timetxt);
this.timepanel.Dock = System.Windows.Forms.DockStyle.Fill;
this.timepanel.Location = new System.Drawing.Point(0, 0);
this.timepanel.Margin = new System.Windows.Forms.Padding(0);
this.timepanel.Name = "timepanel";
this.timepanel.Size = new System.Drawing.Size(57, 20);
this.timepanel.TabIndex = 0;
//
// timetxt
//
this.timetxt.Dock = System.Windows.Forms.DockStyle.Fill;
this.timetxt.Location = new System.Drawing.Point(0, 0);
this.timetxt.Name = "timetxt";
this.timetxt.Size = new System.Drawing.Size(57, 20);
this.timetxt.TabIndex = 1;
this.timetxt.Text = "time";
this.timetxt.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
//
// CDatePicker
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.AutoSize = true;
this.Controls.Add(this.splitContainer1);
this.MaximumSize = new System.Drawing.Size(236, 20);
this.MinimumSize = new System.Drawing.Size(100, 20);
this.Name = "CDatePicker";
this.Size = new System.Drawing.Size(236, 20);
this.splitContainer1.Panel1.ResumeLayout(false);
this.splitContainer1.Panel2.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).EndInit();
this.splitContainer1.ResumeLayout(false);
this.datepanel.ResumeLayout(false);
this.datepanel.PerformLayout();
this.timepanel.ResumeLayout(false);
this.timepanel.PerformLayout();
this.ResumeLayout(false);

}

#endregion

private System.Windows.Forms.SplitContainer splitContainer1;
private System.Windows.Forms.Panel datepanel;
private System.Windows.Forms.TextBox datetxt;
private System.Windows.Forms.DateTimePicker dateTimePicker1;
private System.Windows.Forms.Panel timepanel;
private System.Windows.Forms.TextBox timetxt;
}
}

编辑:添加最小尺寸后,它看起来更好,但压延机下拉消失了
当控件大小调整为最小值并重建项目时..
此外,文本框不会固定在日历按钮附近。

编辑:为上面添加的图片..日历消失了。

date calender disappears

编辑:哦,我还错过了一件事,日期字段和时间字段都是可折叠的。这就是拆分容器存在的原因。最小尺寸计算也必须意识到这一点。(我猜 2 个不同的最小尺寸取决于时间字段的可见性。)

问题:

a) 如何防止用户控件的大小调整超出特定的最小限制以避免上述问题? (pic1 好像是idea size)

b) 我能否绘制日期时间选择器,使文本被遮挡,我们只看到
日历下拉按钮?如果是这样,我还需要处理调整大小事件吗?

c) 我怎样才能不断调整文本框的大小,以便它始终覆盖 DTP 的日期文本部分。

最佳答案

你有一个简单的问题和一个困难的问题。从屏幕截图中可以明显看出这个简单的问题。 DateTimePicker 未正确调整大小,请注意下拉按钮如何在右侧被剪裁。 UserControl 太奇怪了,无法真正查明问题所在,但我认为是 datePanel。您正在使用 Anchor.Right 而不是 Dock.Fill。

困难的问题是下拉按钮会根据可用于呈现 DTP 内容的空间量动态调整自身大小。至少在 Windows 7 上,早期版本使用不同的渲染策略。遗憾的是,VisualStyles api 不返回按钮的实际大小。唯一合适的处理方法是确保文本框足够大以覆盖图标,因此只有下拉箭头可见。

我不能对 UserControl 做太多事情,我将提出一个更简单的解决方案,它仅派生自 DateTimePicker 类并在其中嵌入一个 TextBox。在运行时也很多便宜:

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
using System.Runtime.InteropServices;

class MyDateTimePicker : DateTimePicker {
private TextBox editbox;
private int buttonWidth;

public MyDateTimePicker() {
editbox = new TextBox();
editbox.BorderStyle = BorderStyle.None;
editbox.BackColor = Color.Gold; // debugging
this.Controls.Add(editbox);
}

public override Font Font {
get { return base.Font; }
set { base.Font = editbox.Font = value; }
}

protected override void OnResize(EventArgs e) {
if (buttonWidth == 0) measureButtonWidth();
var margin = (this.ClientSize.Height - editbox.PreferredHeight) / 2;
editbox.Location = new Point(margin, margin);
editbox.Width = this.ClientSize.Width - margin - buttonWidth;
base.OnResize(e);
}

private void measureButtonWidth() {
if (!Application.RenderWithVisualStyles) buttonWidth = 21; // TODO: measure
else {
var renderer = new VisualStyleRenderer("DATEPICKER", 3, 1);
using (var gr = CreateGraphics()) {
buttonWidth = renderer.GetPartSize(gr, ThemeSizeType.True).Height;
}
}
}

protected override void Dispose(bool disposing) {
if (disposing) editbox.Dispose();
base.Dispose(disposing);
}
}

OnResize 覆盖负责使 TextBox 保持正确的大小。添加处理 editbox.Text 属性所需的任何代码。唯一没有注意的细节是禁用视觉样式时下拉按钮的大小。现在不常见,但仍有可能。关闭机器上的主题并调整硬编码大小,使其与外观相匹配。

关于c# - 隐藏 DateTimePicker 的文本和 Usercontrol 调整大小,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10023158/

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