C# DataGridViewButtonColumn 支持 disable [自製元件] (GOOGLE: datagridviewbuttoncell enabled) – jashlia

C# DataGridViewButtonColumn 支持 disable [自製元件] (GOOGLE: datagridviewbuttoncell enabled) 

資料來源: https://www.twblogs.net/a/5c3203a8bd9eee35b3a4f5e7

GITHUB: https://github.com/jash-git/CS_DataGridViewButtonColumn_disable

實際圖:

程式碼:

CustomDGVButtonCell.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;
using System.Windows.Forms;
using System.Drawing;
using System.Windows.Forms.VisualStyles;

namespace WindowsFormsApplication1
{
    //C# DataGridViewButtonColumn 支持disable
    //https://www.twblogs.net/a/5c3203a8bd9eee35b3a4f5e7
    public class CustomDGVButtonCell : DataGridViewButtonCell
    {
        public bool Enabled { get; set; }

        // By default, enable the button cell.
        public CustomDGVButtonCell()
        {
            Enabled = true;
        }
        // Override the Clone method so that the Enabled property is copied.
        public override object Clone()
        {
            CustomDGVButtonCell cell = (CustomDGVButtonCell)base.Clone();
            cell.Enabled = Enabled;
            return cell;
        }
        public override void InitializeEditingControl(int rowIndex, object initialFormattedValue,
           DataGridViewCellStyle dataGridViewCellStyle)
        {
            base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
        }
        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.Enabled)
            {
                // 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 = 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 (FormattedValue is string)
                {
                    TextRenderer.DrawText(graphics, (string)FormattedValue, 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);
            }
        }
    }
    public class CustomDGVButtonColumn : DataGridViewButtonColumn
    {
        public CustomDGVButtonColumn()
        {
            CustomDGVButtonCell obj = new CustomDGVButtonCell();
            this.CellTemplate = obj;
            CellTemplate = new CustomDGVButtonCell();
        }
    }
}

Form1.Designer.cs

namespace WindowsFormsApplication1
{
    partial class Form1
    {
        /// 

        /// 設計工具所需的變數。
        /// 
        private System.ComponentModel.IContainer components = null;

        /// 

        /// 清除任何使用中的資源。
        /// 
        /// 如果應該處置 Managed 資源則為 true，否則為 false。
        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

        /// 

        /// 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。
        /// 
        private void InitializeComponent()
        {
            this.dataGridView1 = new System.Windows.Forms.DataGridView();
            this.button1 = new System.Windows.Forms.Button();
            this.Column1 = new System.Windows.Forms.DataGridViewTextBoxColumn();
            this.Column2 = new CustomDGVButtonColumn();
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
            this.SuspendLayout();
            // 
            // dataGridView1
            // 
            this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
            this.Column1,
            this.Column2});
            this.dataGridView1.Location = new System.Drawing.Point(12, 12);
            this.dataGridView1.Name = "dataGridView1";
            this.dataGridView1.RowTemplate.Height = 24;
            this.dataGridView1.Size = new System.Drawing.Size(630, 150);
            this.dataGridView1.TabIndex = 0;
            this.dataGridView1.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellClick);
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(12, 168);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(137, 44);
            this.button1.TabIndex = 1;
            this.button1.Text = "button1";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Column1
            // 
            this.Column1.HeaderText = "Column1";
            this.Column1.Name = "Column1";
            // 
            // Column2
            // 
            this.Column2.HeaderText = "Column2";
            this.Column2.Name = "Column2";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(706, 391);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.dataGridView1);
            this.Name = "Form1";
            this.Text = "Form1";
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.DataGridView dataGridView1;
        private System.Windows.Forms.DataGridViewTextBoxColumn Column1;
        private CustomDGVButtonColumn Column2;
        private System.Windows.Forms.Button button1;
    }
}

Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                //---
                //設定&清空

                dataGridView1.RowHeadersVisible = false;//DataGridView 最前面指示選取列所在位置的箭頭欄位
                dataGridView1.AllowUserToAddRows = false;//是否允許使用者新增資料
                dataGridView1.AllowUserToDeleteRows = false;//是否允許使用者刪除資料
                dataGridView1.AllowUserToOrderColumns = false;//是否允許使用者調整欄位位置
                //所有表格欄位寬度全部變成可調 dgvSub0000_01.AllowUserToResizeColumns = false;//是否允許使用者改變欄寬
                dataGridView1.AllowUserToResizeRows = false;//是否允許使用者改變行高
                for (int i = 0; i < dataGridView1.Columns.Count; i++)
                {
                    dataGridView1.Columns[i].ReadOnly = true;//單一欄位禁止編輯
                }
                dataGridView1.AllowUserToAddRows = false;//刪除空白列
                dataGridView1.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;//整列選取

                do
                {
                    for (int i = 0; i < dataGridView1.Rows.Count; i++)
                    {
                        DataGridViewRow r1 = this.dataGridView1.Rows[i];//取得DataGridView整列資料
                        this.dataGridView1.Rows.Remove(r1);//DataGridView刪除整列
                    }
                } while (dataGridView1.Rows.Count > 0);

                dataGridView1.Rows.Add("000", "123");
                dataGridView1.Rows.Add("456", "789");

                ((CustomDGVButtonCell)dataGridView1.Rows[1].Cells[1]).Enabled = false;
            }
            catch { }

        }

        private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex > -1)
            {
                CustomDGVButtonCell cell = (CustomDGVButtonCell)dataGridView1.Rows[e.RowIndex].Cells[1];

                if (e.ColumnIndex == 1 && cell.Enabled)
                {
                    try
                    {
                        MessageBox.Show(cell.Value.ToString());
                    }
                    catch { }
                    
                }
            }
        }
    }
}

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