（四十九）c#Winform自定义控件-下拉框（表格）
2019-08-28 17:46
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前提
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
GitHub：https://github.com/kwwwvagaa/NetWinformControl
码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
如果觉得写的还行，请点个 star 支持一下吧
欢迎前来交流探讨： 企鹅群568015492
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace HZH_Controls.Controls.ComboBox
{
[ToolboxItem(false)]
public partial class UCComboxGridPanel : UserControl
{
[Description("项点击事件"), Category("自定义")]
public event DataGridViewEventHandler ItemClick;
private Type m_rowType = typeof(UCDataGridViewRow);
public Type RowType
{
get { return m_rowType; }
set
{
m_rowType = value;
this.ucDataGridView1.RowType = m_rowType;
}
}
private List<DataGridViewColumnEntity> m_columns = null;
public List<DataGridViewColumnEntity> Columns
{
get { return m_columns; }
set
{
m_columns = value;
this.ucDataGridView1.Columns = value;
}
}
private List<object> m_dataSource = null;
public List<object> DataSource
{
get { return m_dataSource; }
set { m_dataSource = value; }
}
private string strLastSearchText = string.Empty;
49 UCPagerControl m_page = new UCPagerControl();
public UCComboxGridPanel()
{
InitializeComponent();
this.ucDataGridView1.Page = m_page;
this.ucDataGridView1.IsAutoHeight = false;
this.txtSearch.txtInput.TextChanged += txtInput_TextChanged;
this.ucDataGridView1.ItemClick += ucDataGridView1_ItemClick;
}
void ucDataGridView1_ItemClick(object sender, DataGridViewEventArgs e)
{
if (ItemClick != null)
{
ItemClick((sender as IDataGridViewRow).DataSource, null);
}
}
void txtInput_TextChanged(object sender, EventArgs e)
{
timer1.Enabled = false;
timer1.Enabled = true;
}
private void UCComboxGridPanel_Load(object sender, EventArgs e)
{
m_page.DataSource = m_dataSource;
this.ucDataGridView1.DataSource = m_page.GetCurrentSource();
}
private void timer1_Tick(object sender, EventArgs e)
{
if (strLastSearchText == txtSearch.InputText)
{
timer1.Enabled = false;
}
else
{
strLastSearchText = txtSearch.InputText;
Search(txtSearch.InputText);
}
}
private void Search(string strText)
{
m_page.StartIndex = 0;
if (!string.IsNullOrEmpty(strText))
{
strText = strText.ToLower();
List<object> lst = m_dataSource.FindAll(p => m_columns.Any(c => (c.Format == null ? (p.GetType().GetProperty(c.DataField).GetValue(p, null).ToStringExt()) : c.Format(p.GetType().GetProperty(c.DataField).GetValue(p, null))).ToLower().Contains(strText)));
m_page.DataSource = lst;
}
else
{
m_page.DataSource = m_dataSource;
}
m_page.Reload();
}
}
}
View Code
namespace HZH_Controls.Controls.ComboBox
{
partial class UCComboxGridPanel
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region 组件设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.panel1 = new System.Windows.Forms.Panel();
this.panel2 = new System.Windows.Forms.Panel();
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.ucControlBase1 = new HZH_Controls.Controls.UCControlBase();
this.ucDataGridView1 = new HZH_Controls.Controls.UCDataGridView();
this.txtSearch = new HZH_Controls.Controls.UCTextBoxEx();
this.ucSplitLine_V2 = new HZH_Controls.Controls.UCSplitLine_V();
this.ucSplitLine_V1 = new HZH_Controls.Controls.UCSplitLine_V();
this.ucSplitLine_H2 = new HZH_Controls.Controls.UCSplitLine_H();
this.ucSplitLine_H1 = new HZH_Controls.Controls.UCSplitLine_H();
this.panel1.SuspendLayout();
this.ucControlBase1.SuspendLayout();
this.SuspendLayout();
//
// panel1
//
this.panel1.Controls.Add(this.ucCon
3ff8
trolBase1);
this.panel1.Controls.Add(this.panel2);
this.panel1.Controls.Add(this.txtSearch);
this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
this.panel1.Location = new System.Drawing.Point(1, 1);
this.panel1.Name = "panel1";
this.panel1.Padding = new System.Windows.Forms.Padding(5);
this.panel1.Size = new System.Drawing.Size(447, 333);
this.panel1.TabIndex = 4;
//
// panel2
//
this.panel2.Dock = System.Windows.Forms.DockStyle.Top;
this.panel2.Location = new System.Drawing.Point(5, 47);
this.panel2.Name = "panel2";
this.panel2.Size = new System.Drawing.Size(437, 15);
this.panel2.TabIndex = 1;
//
// timer1
//
this.timer1.Interval = 1000;
this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
//
// ucControlBase1
//
this.ucControlBase1.ConerRadius = 5;
this.ucControlBase1.Controls.Add(this.ucDataGridView1);
this.ucControlBase1.Dock = System.Windows.Forms.DockStyle.Fill;
this.ucControlBase1.FillColor = System.Drawing.Color.Transparent;
this.ucControlBase1.Font = new System.Drawing.Font("微软雅黑", 15F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
this.ucControlBase1.IsRadius = false;
this.ucControlBase1.IsShowRect = true;
this.ucControlBase1.Location = new System.Drawing.Point(5, 62);
this.ucControlBase1.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
this.ucControlBase1.Name = "ucControlBase1";
this.ucControlBase1.Padding = new System.Windows.Forms.Padding(5);
this.ucControlBase1.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(220)))), ((int)(((byte)(220)))), ((int)(((byte)(220)))));
this.ucControlBase1.RectWidth = 1;
this.ucControlBase1.Size = new System.Drawing.Size(437, 266);
this.ucControlBase1.TabIndex = 2;
this.ucControlBase1.TabStop = false;
//
// ucDataGridView1
//
this.ucDataGridView1.BackColor = System.Drawing.Color.White;
this.ucDataGridView1.Columns = null;
this.ucDataGridView1.DataSource = null;
this.ucDataGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
this.ucDataGridView1.HeadFont = new System.Drawing.Font("微软雅黑", 12F);
this.ucDataGridView1.HeadHeight = 40;
this.ucDataGridView1.HeadPadingLeft = 0;
this.ucDataGridView1.HeadTextColor = System.Drawing.Color.Black;
this.ucDataGridView1.IsAutoHeight = false;
this.ucDataGridView1.IsShowCheckBox = false;
this.ucDataGridView1.IsShowHead = true;
this.ucDataGridView1.Location = new System.Drawing.Point(5, 5);
this.ucDataGridView1.Name = "ucDataGridView1";
this.ucDataGridView1.Page = null;
this.ucDataGridView1.RowHeight = 30;
this.ucDataGridView1.RowType = typeof(HZH_Controls.Controls.UCDataGridViewRow);
this.ucDataGridView1.Size = new System.Drawing.Size(427, 256);
this.ucDataGridView1.TabIndex = 0;
this.ucDataGridView1.TabStop = false;
//
// txtSearch
//
this.txtSearch.BackColor = System.Drawing.Color.Transparent;
this.txtSearch.ConerRadius = 5;
this.txtSearch.Cursor = System.Windows.Forms.Cursors.IBeam;
this.txtSearch.DecLength = 2;
this.txtSearch.Dock = System.Windows.Forms.DockStyle.Top;
this.txtSearch.FillColor = System.Drawing.Color.Empty;
this.txtSearch.Font = new System.Drawing.Font("微软雅黑", 18F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
this.txtSearch.InputText = "";
this.txtSearch.InputType = HZH_Controls.TextInputType.NotControl;
this.txtSearch.IsFocusColor = true;
this.txtSearch.IsRadius = true;
3ff8
this.txtSearch.IsShowClearBtn = true;
this.txtSearch.IsShowKeyboard = false;
this.txtSearch.IsShowRect = true;
this.txtSearch.IsShowSearchBtn = false;
this.txtSearch.KeyBoardType = HZH_Controls.Controls.KeyBoardType.UCKeyBorderAll_EN;
this.txtSearch.Location = new System.Drawing.Point(5, 5);
this.txtSearch.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
this.txtSearch.MaxValue = new decimal(new int[] {
1000000,
0,
0,
0});
this.txtSearch.MinValue = new decimal(new int[] {
1000000,
0,
0,
-2147483648});
this.txtSearch.Name = "txtSearch";
this.txtSearch.Padding = new System.Windows.Forms.Padding(5);
this.txtSearch.PromptColor = System.Drawing.Color.Gray;
this.txtSearch.PromptFont = new System.Drawing.Font("微软雅黑", 15F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
this.txtSearch.PromptText = "输入内容模糊搜索";
this.txtSearch.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(220)))), ((int)(((byte)(220)))), ((int)(((byte)(220)))));
this.txtSearch.RectWidth = 1;
this.txtSearch.RegexPattern = "";
this.txtSearch.Size = new System.Drawing.Size(437, 42);
this.txtSearch.TabIndex = 0;
//
// ucSplitLine_V2
//
this.ucSplitLine_V2.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
this.ucSplitLine_V2.Dock = System.Windows.Forms.DockStyle.Right;
this.ucSplitLine_V2.Location = new System.Drawing.Point(448, 1);
this.ucSplitLine_V2.Name = "ucSplitLine_V2";
this.ucSplitLine_V2.Size = new System.Drawing.Size(1, 333);
this.ucSplitLine_V2.TabIndex = 3;
this.ucSplitLine_V2.TabStop = false;
//
// ucSplitLine_V1
//
this.ucSplitLine_V1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
this.ucSplitLine_V1.Dock = System.Windows.Forms.DockStyle.Left;
this.ucSplitLine_V1.Location = new System.Drawing.Point(0, 1);
this.ucSplitLine_V1.Name = "ucSplitLine_V1";
this.ucSplitLine_V1.Size = new System.Drawing.Size(1, 333);
this.ucSplitLine_V1.TabIndex = 2;
this.ucSplitLine_V1.TabStop = false;
//
// ucSplitLine_H2
//
this.ucSplitLine_H2.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
this.ucSplitLine_H2.Dock = System.Windows.Forms.DockStyle.Bottom;
this.ucSplitLine_H2.Location = new System.Drawing.Point(0, 334);
this.ucSplitLine_H2.Name = "ucSplitLine_H2";
this.ucSplitLine_H2.Size = new System.Drawing.Size(449, 1);
this.ucSplitLine_H2.TabIndex = 1;
this.ucSplitLine_H2.TabStop = false;
//
// ucSplitLine_H1
//
this.ucSplitLine_H1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
this.ucSplitLine_H1.Dock = System.Windows.Forms.DockStyle.Top;
this.ucSplitLine_H1.Location = new System.Drawing.Point(0, 0);
this.ucSplitLine_H1.Name = "ucSplitLine_H1";
this.ucSplitLine_H1.Size = new System.Drawing.Size(449, 1);
this.ucSplitLine_H1.TabIndex = 0;
this.ucSplitLine_H1.TabStop = false;
//
// UCComboxGridPanel
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.White;
this.Controls.Add(this.panel1);
this.Controls.Add(this.ucSplitLine_V2);
this.Controls.Add(this.ucSplitLine_V1);
this.Controls.Add(this.ucSplitLine_H2);
this.Controls.Add(this.ucSplitLine_H1);
this.Name = "UCComboxGridPanel";
this.Size = new System.Drawing.Size(449, 335);
this.Load += new System.EventHandler(this.UCComboxGridPanel_Load);
this.panel1.ResumeLayout(false);
this.ucControlBase1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
private UCSplitLine_H ucSplitLine_H1;
private UCSplitLine_H ucSplitLine_H2;
private UCSplitLine_V ucSplitLine_V1;
private UCSplitLine_V ucSplitLine_V2;
private System.Windows.Forms.Panel panel1;
private UCControlBase ucControlBase1;
private UCDataGridView ucDataGridView1;
private System.Windows.Forms.Panel panel2;
private System.Windows.Forms.Timer timer1;
private UCTextBoxEx txtSearch;
}
}
View Code
以上，弹出面板完成，下面就是下拉控件了
添加一个用户控件UCComboxGrid，继承UCCombox
一些属性
private Type m_rowType = typeof(UCDataGridViewRow);
[Description("表格行类型"), Category("自定义")]
public Type GridRowType
{
get { return m_rowType; }
set
{
m_rowType = value;
}
}
int intWidth = 0;
private List<DataGridViewColumnEntity> m_columns = null;
[Description("表格列"), Category("自定义")]
public List<DataGridViewColumnEntity> GridColumns
{
get { return m_columns; }
set
{
m_columns = value;
if (value != null)
intWidth = value.Sum(p => p.WidthType == SizeType.Absolute ? p.Width : (p.Width < 80 ? 80 : p.Width));
}
}
private List<object> m_dataSource = null;
[Description("表格数据源"), Category("自定义")]
public List<object> GridDataSource
{
get { return m_dataSource; }
set { m_dataSource = value; }
}
private string m_textField;
[Description("显示值字段名称"), Category("自定义")]
public string TextField
{
get { return m_textField; }
set
{
m_textField = value;
SetText();
}
}
[Obsolete("不再可用的属性")]
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
private new ComboBoxStyle BoxStyle
{
get;
set;
}
private object selectSource = null;
[Description("选中的数据源"), Category("自定义")]
public object SelectSource
{
get { return selectSource; }
set
{
selectSource = value;
SetText();
if (SelectedChangedEvent != null)
{
SelectedChangedEvent(value, null);
}
}
}
[Description("选中数据源改变事件"), Category("自定义")]
public new event EventHandler SelectedChangedEvent;
重写点击事件来处理弹出
protected override void click_MouseDown(object sender, MouseEventArgs e)
{
if (m_columns == null || m_columns.Count <= 0)
return;
if (m_ucPanel == null)
{
var p = this.Parent.PointToScreen(this.Location);
int intScreenHeight = Screen.PrimaryScreen.Bounds.Height;
int intHeight = Math.Max(p.Y, intScreenHeight - p.Y - this.Height);
intHeight -= 100;
m_ucPanel = new UCComboxGridPanel();
m_ucPanel.ItemClick += m_ucPanel_ItemClick;
m_ucPanel.Height = intHeight;
m_ucPanel.Width = intWidth;
m_ucPanel.Columns = m_columns;
m_ucPanel.RowType = m_rowType;
if (m_dataSource != null && m_dataSource.Count > 0)
{
int _intHeight = Math.Min(110 + m_dataSource.Count * 36, m_ucPanel.Height);
m_ucPanel.Height = _intHeight;
}
}
m_ucPanel.DataSource = m_dataSource;
if (_frmAnchor == null || _frmAnchor.IsDisposed || _frmAnchor.Visible == false)
{
_frmAnchor = new Forms.FrmAnchor(this, m_ucPanel);
_frmAnchor.Show(this.FindForm());
}
}
void m_ucPanel_ItemClick(object sender, DataGridViewEventArgs e)
{
_frmAnchor.Hide();
SelectSource = sender;
}
private void SetText()
{
if (!string.IsNullOrEmpty(m_textField) && selectSource != null)
{
var pro = selectSource.GetType().GetProperty(m_textField);
if (pro != null)
{
TextValue = pro.GetValue(selectSource, null).ToStringExt();
}
}
}
完整代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using HZH_Controls.Controls;
namespace HZH_Controls.Controls.ComboBox
{
public partial class UCComboxGrid : UCCombox
{
private Type m_rowType = typeof(UCDataGridViewRow);
[Description("表格行类型"), Category("自定义")]
public Type GridRowType
{
get { return m_rowType; }
set
{
m_rowType = value;
}
}
int intWidth = 0;
private List<DataGridViewColumnEntity> m_columns = null;
[Description("表格列"), Category("自定义")]
public List<DataGridViewColumnEntity> GridColumns
{
get { return m_columns; }
set
{
m_columns = value;
if (value != null)
intWidth = value.Sum(p => p.WidthType == SizeType.Absolute ? p.Width : (p.Width < 80 ? 80 : p.Width));
}
}
private List<object> m_dataSource = null;
[Description("表格数据源"), Category("自定义")]
public List<object> GridDataSource
{
get { return m_dataSource; }
set { m_dataSource = value; }
}
private string m_textField;
[Description("显示值字段名称"), Category("自定义")]
public string TextField
{
get { return m_textField; }
set
{
m_textField = value;
SetText();
}
}
[Obsolete("不再可用的属性")]
[Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
65 private new ComboBoxStyle BoxStyle
{
get;
set;
}
private object selectSource = null;
[Description("选中的数据源"), Category("自定义")]
public object SelectSource
{
get { return selectSource; }
set
{
selectSource = value;
SetText();
if (SelectedChangedEvent != null)
{
SelectedChangedEvent(value, null);
}
}
}
[Description("选中数据源改变事件"), Category("自定义")]
public new event EventHandler SelectedChangedEvent;
public UCComboxGrid()
{
InitializeComponent();
}
UCComboxGridPanel m_ucPanel = null;
Forms.FrmAnchor _frmAnchor;
protected override void click_MouseDown(object sender, MouseEventArgs e)
{
if (m_columns == null || m_columns.Count <= 0)
return;
if (m_ucPanel == null)
{
var p = this.Parent.PointToScreen(this.Location);
int intScreenHeight = Screen.PrimaryScreen.Bounds.Height;
int intHeight = Math.Max(p.Y, intScreenHeight - p.Y - this.Height);
intHeight -= 100;
m_ucPanel = new UCComboxGridPanel();
m_ucPanel.ItemClick += m_ucPanel_ItemClick;
m_ucPanel.Height = intHeight;
m_ucPanel.Width = intWidth;
m_ucPanel.Columns = m_columns;
m_ucPanel.RowType = m_rowType;
if (m_dataSource != null && m_dataSource.Count > 0)
{
int _intHeight = Math.Min(110 + m_dataSource.Count * 36, m_ucPanel.Height);
m_ucPanel.Height = _intHeight;
}
}
m_ucPanel.DataSource = m_dataSource;
if (_frmAnchor == null || _frmAnchor.IsDisposed || _frmAnchor.Visible == false)
{
_frmAnchor = new Forms.FrmAnchor(this, m_ucPanel);
_frmAnchor.Show(this.FindForm());
}
}
void m_ucPanel_ItemClick(object sender, DataGridViewEventArgs e)
{
_frmAnchor.Hide();
SelectSource = sender;
}
private void SetText()
{
if (!string.IsNullOrEmpty(m_textField) && selectSource != null)
{
var pro = selectSource.GetType().GetProperty(m_textField);
if (pro != null)
{
TextValue = pro.GetValue(selectSource, null).ToStringExt();
}
}
}
}
}
View Code
namespace HZH_Controls.Controls.ComboBox
{
partial class UCComboxGrid
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region 组件设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.SuspendLayout();
//
// txtInput
//
this.txtInput.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
//
// UCComboxGrid
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.Transparent;
this.BoxStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.FillColor = System.Drawing.Color.FromArgb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
this.Name = "UCComboxGrid";
this.RectColor = System.Drawing.Color.FromArgb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
}
}
View Code
以上就是全部东西了
最后的话
如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧
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