using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
class Form1 : Form
{
private DataGridView dataGridView1 = new DataGridView();
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
public Form1()
{
this.AutoSize = true;
this.Load += new EventHandler(Form1_Load);
}
public void Form1_Load(object sender, EventArgs e)
{
DataGridViewCheckBoxColumn column0 =
new DataGridViewCheckBoxColumn();
DataGridViewDisableButtonColumn column1 =
new DataGridViewDisableButtonColumn();
column0.Name = "CheckBoxes";
column1.Name = "Buttons";
dataGridView1.Columns.Add(column0);
dataGridView1.Columns.Add(column1);
dataGridView1.RowCount = 8;
dataGridView1.AutoSize = true;
dataGridView1.AllowUserToAddRows = false;
dataGridView1.ColumnHeadersDefaultCellStyle.Alignment =
DataGridViewContentAlignment.MiddleCenter;
// Set the text for each button.
for (int i = 0; i < dataGridView1.RowCount; i++)
{
dataGridView1.Rows[i].Cells["Buttons"].Value =
"Button " + i.ToString();
}
dataGridView1.CellValueChanged +=
new DataGridViewCellEventHandler(dataGridView1_CellValueChanged);
dataGridView1.CurrentCellDirtyStateChanged +=
new EventHandler(dataGridView1_CurrentCellDirtyStateChanged);
dataGridView1.CellClick +=
new DataGridViewCellEventHandler(dataGridView1_CellClick);
this.Controls.Add(dataGridView1);
}
// This event handler manually raises the CellValueChanged event
// by calling the CommitEdit method.
void dataGridView1_CurrentCellDirtyStateChanged(object sender,
EventArgs e)
{
if (dataGridView1.IsCurrentCellDirty)
{
dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
}
}
// If a check box cell is clicked, this event handler disables
// or enables the button in the same row as the clicked cell.
public void dataGridView1_CellValueChanged(object sender,
DataGridViewCellEventArgs e)
{
if (dataGridView1.Columns[e.ColumnIndex].Name == "CheckBoxes")
{
DataGridViewDisableButtonCell buttonCell =
(DataGridViewDisableButtonCell)dataGridView1.
Rows[e.RowIndex].Cells["Buttons"];
DataGridViewCheckBoxCell checkCell =
(DataGridViewCheckBoxCell)dataGridView1.
Rows[e.RowIndex].Cells["CheckBoxes"];
buttonCell.Enabled = !(Boolean)checkCell.Value;
dataGridView1.Invalidate();
}
}
// If the user clicks on an enabled button cell, this event handler
// reports that the button is enabled.
void dataGridView1_CellClick(object sender,
DataGridViewCellEventArgs e)
{
if (dataGridView1.Columns[e.ColumnIndex].Name == "Buttons")
{
DataGridViewDisableButtonCell buttonCell =
(DataGridViewDisableButtonCell)dataGridView1.
Rows[e.RowIndex].Cells["Buttons"];
if (buttonCell.Enabled)
{
MessageBox.Show(dataGridView1.Rows[e.RowIndex].
Cells[e.ColumnIndex].Value.ToString() +
" is enabled");
}
}
}
}
public class DataGridViewDisableButtonColumn : DataGridViewButtonColumn
{
public DataGridViewDisableButtonColumn()
{
this.CellTemplate = new DataGridViewDisableButtonCell();
}
}
public class DataGridViewDisableButtonCell : DataGridViewButtonCell
{
private bool enabledValue;
public bool Enabled
{
get
{
return enabledValue;
}
set
{
enabledValue = value;
}
}
// Override the Clone method so that the Enabled property is copied.
public override object Clone()
{
DataGridViewDisableButtonCell cell =
(DataGridViewDisableButtonCell)base.Clone();
cell.Enabled = this.Enabled;
return cell;
}
// By default, enable the button cell.
public DataGridViewDisableButtonCell()
{
this.enabledValue = true;
}
protected override void Paint(Graphics graphics,
Rectangle clipBounds, Rectangle cellBounds, int rowIndex,
DataGridViewElementStates elementState, object value,
object formattedValue, string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
// The button cell is disabled, so paint the border,
// background, and disabled button for the cell.
if (!this.enabledValue)
{
// Draw the cell background, if specified.
if ((paintParts & DataGridViewPaintParts.Background) ==
DataGridViewPaintParts.Background)
{
SolidBrush cellBackground =
new SolidBrush(cellStyle.BackColor);
graphics.FillRectangle(cellBackground, cellBounds);
cellBackground.Dispose();
}
// Draw the cell borders, if specified.
if ((paintParts & DataGridViewPaintParts.Border) ==
DataGridViewPaintParts.Border)
{
PaintBorder(graphics, clipBounds, cellBounds, cellStyle,
advancedBorderStyle);
}
// Calculate the area in which to draw the button.
Rectangle buttonArea = cellBounds;
Rectangle buttonAdjustment =
this.BorderWidths(advancedBorderStyle);
buttonArea.X += buttonAdjustment.X;
buttonArea.Y += buttonAdjustment.Y;
buttonArea.Height -= buttonAdjustment.Height;
buttonArea.Width -= buttonAdjustment.Width;
// Draw the disabled button.
ButtonRenderer.DrawButton(graphics, buttonArea,
PushButtonState.Disabled);
// Draw the disabled button text.
if (this.FormattedValue is String)
{
TextRenderer.DrawText(graphics,
(string)this.FormattedValue,
this.DataGridView.Font,
buttonArea, SystemColors.GrayText);
}
}
else
{
// The button cell is enabled, so let the base class
// handle the painting.
base.Paint(graphics, clipBounds, cellBounds, rowIndex,
elementState, value, formattedValue, errorText,
cellStyle, advancedBorderStyle, paintParts);
}
}
}
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