[DataGridView] CheckBox Select All of the Datagridview
.Designer.cs
{
partial class Form1
{
/// <summary>
/// 設計工具所需的變數。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清除任何使用中的資源。
/// </summary>
/// <param name="disposing">如果應該處置 Managed 資源則為 true，否則為 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form 設計工具產生的程式碼
/// <summary>
/// 此為設計工具支援所需的方法 - 請勿使用程式碼編輯器修改這個方法的內容。
///
/// </summary>
private void InitializeComponent()
{
this.dgv = new System.Windows.Forms.DataGridView();
this.Column1 = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.Column2 = new System.Windows.Forms.DataGridViewCheckBoxColumn();
this.Column3 = new System.Windows.Forms.DataGridViewCheckBoxColumn();
((System.ComponentModel.ISupportInitialize)(this.dgv)).BeginInit();
this.SuspendLayout();
//
// dgv
//
this.dgv.AllowUserToAddRows = false;
this.dgv.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dgv.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
this.Column1,
this.Column2,
this.Column3});
this.dgv.Location = new System.Drawing.Point(12, 12);
this.dgv.Name = "dgv";
this.dgv.RowTemplate.Height = 24;
this.dgv.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
this.dgv.Size = new System.Drawing.Size(363, 207);
this.dgv.CellContentClick += new System.Windows.Forms.DataGridViewCellEventHandler(dgv_CellContentClick);
this.dgv.TabIndex = 0;
//
// Column1
//
this.Column1.HeaderText = "Column1";
this.Column1.Name = "Column1";
//
// Column2
//
this.Column2.HeaderText = "Column2";
this.Column2.Name = "Column2";
//
// Column3
//
this.Column3.HeaderText = "Column3";
this.Column3.Name = "Column3";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(387, 231);
this.Controls.Add(this.dgv);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.dgv)).EndInit();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.DataGridView dgv;
private System.Windows.Forms.DataGridViewTextBoxColumn Column1;
private System.Windows.Forms.DataGridViewCheckBoxColumn Column2;
private System.Windows.Forms.DataGridViewCheckBoxColumn Column3;
}
}
.cs
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace CheckBoxSelectAllOfTheDatagridview
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
object[][] dbData = new object[][]
{new object[]{1,null,null}
,new object[]{2,null,null}
,new object[]{3,null,null}
,new object[]{4,null,null}
,new object[]{5,null,null}};
foreach (object[] obj in dbData)
dgv.Rows.Add(obj);
//第一組 CheckBoxHeaderCell
CheckBoxSelectAll.DatagridViewCheckBoxHeaderCell cbHeader1 = new CheckBoxSelectAll.DatagridViewCheckBoxHeaderCell();
Column2.HeaderCell = cbHeader1;
Column2.HeaderText = "Column2";
cbHeader1.OnCheckBoxClicked += new CheckBoxSelectAll.CheckBoxClickedHandler(cbHeader_OnCheckBoxClicked);
//第二組 CheckBoxHeaderCell
CheckBoxSelectAll.DatagridViewCheckBoxHeaderCell cbHeader2 = new CheckBoxSelectAll.DatagridViewCheckBoxHeaderCell();
Column3.HeaderCell = cbHeader2;
Column3.HeaderText = "Column3";
cbHeader2.OnCheckBoxClicked += new CheckBoxSelectAll.CheckBoxClickedHandler(cbHeader_OnCheckBoxClicked);
}
private void dgv_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (dgv.Columns[e.ColumnIndex] is DataGridViewCheckBoxColumn)
{
if (((bool)dgv.Rows[e.RowIndex].Cells[e.ColumnIndex].Value) == true)
{
((CheckBoxSelectAll.DatagridViewCheckBoxHeaderCell)dgv.Columns[e.ColumnIndex].HeaderCell)._checked = false;
//為了 Reflash UI, 因此將該 Column 先隱藏再顯示
dgv.Columns[e.ColumnIndex].Visible = false;
dgv.Columns[e.ColumnIndex].Visible = true;
}
}
}
//DataGridView全選功能
public void cbHeader_OnCheckBoxClicked(bool b, DataGridViewCellMouseEventArgs e)
{
bool value = false;
if (b)
value = b;
foreach (DataGridViewRow row in dgv.Rows)
row.Cells[e.ColumnIndex].Value = value;
//因目前 Focus Row 上的 UI 未 Reflssh, 將會導致畫面勾選無反應, 因此自動將 Focus Row 設定為第一列
if (this.dgv.RowCount > 0)
this.dgv.CurrentCell = this.dgv[0, 0];
}
////DataGridView全選按鈕
public class CheckBoxSelectAll
{
public delegate void CheckBoxClickedHandler(bool state, DataGridViewCellMouseEventArgs e);//修改部分
public class DataGridViewCheckBoxHeaderCellEventArgs : EventArgs
{
bool _bChecked;
int _column_X = 0;//增加部分
public DataGridViewCheckBoxHeaderCellEventArgs(bool bChecked, DataGridViewCellMouseEventArgs ee)
{
_bChecked = bChecked;
_column_X = ee.ColumnIndex;//增加部分
}
public bool Checked
{
get { return _bChecked; }
}
public int column_X//增加部分
{
get { return _column_X; }
}
}
public class DatagridViewCheckBoxHeaderCell : DataGridViewColumnHeaderCell
{
Point checkBoxLocation;
Size checkBoxSize;
public bool _checked = false;//更改全選checkbox狀態變數
Point _cellLocation = new Point();
System.Windows.Forms.VisualStyles.CheckBoxState _cbState =
System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal;
public event CheckBoxClickedHandler OnCheckBoxClicked;
public DatagridViewCheckBoxHeaderCell() { }
protected override void Paint(System.Drawing.Graphics graphics,
System.Drawing.Rectangle clipBounds,
System.Drawing.Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates dataGridViewElementState,
object value,
object formattedValue,
string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex,
dataGridViewElementState, value,
formattedValue, errorText, cellStyle,
advancedBorderStyle, paintParts);
Point p = new Point();
Size s = CheckBoxRenderer.GetGlyphSize(graphics,
System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal);
p.X = cellBounds.Location.X +
(cellBounds.Width) - (s.Width);
p.Y = cellBounds.Location.Y +
(cellBounds.Height) - (s.Height);
_cellLocation = cellBounds.Location;
checkBoxLocation = p;
checkBoxSize = s;
if (_checked)
_cbState = System.Windows.Forms.VisualStyles.
CheckBoxState.CheckedNormal;
else
_cbState = System.Windows.Forms.VisualStyles.
CheckBoxState.UncheckedNormal;
CheckBoxRenderer.DrawCheckBox
(graphics, checkBoxLocation, _cbState);
}
protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
{
Point p = new Point(e.X + _cellLocation.X, e.Y + _cellLocation.Y);
if (p.X >= checkBoxLocation.X && p.X <=
checkBoxLocation.X + checkBoxSize.Width
&& p.Y >= checkBoxLocation.Y && p.Y <=
checkBoxLocation.Y + checkBoxSize.Height)
{
_checked = !_checked;
if (OnCheckBoxClicked != null)
{
OnCheckBoxClicked(_checked, e); //修改部分
this.DataGridView.InvalidateCell(this);
}
}
base.OnMouseClick(e);
}
}
}
}
}