标签：控件 Rows 表格 index DataGridView cell str new row

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

namespace 表格控件类
{
    /// <summary>
    /// 自定义表格控件
    /// </summary>
    class CustomDataGridView : DataGridView
    {
        private ContextMenuStrip contextMenuStrip;//右键菜单（复制、粘贴）

        public CustomDataGridView()
        {
            this.AllowUserToAddRows = false;//关闭添加行
            this.AllowUserToDeleteRows = false;//关闭删除行
            this.AllowUserToOrderColumns = false;//关闭手动列重新放置
            this.AllowUserToResizeColumns = false;//关闭调整列宽
            this.AllowUserToAddRows = false; //关闭调整行高
            this.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;//可见列自动调节大小的模式
            this.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;//可见行自动调节大小的模式
            this.BackgroundColor = Color.White;//背景色设置为白色
            this.BorderStyle = BorderStyle.FixedSingle;//边框样式
            this.CellBorderStyle = DataGridViewCellBorderStyle.Single;//单元格Cell的边框样式
            this.ClipboardCopyMode = DataGridViewClipboardCopyMode.Disable;//关闭单元格复制（事件中重写）
            this.ColumnHeadersDefaultCellStyle = new DataGridViewCellStyle
            {
                Alignment = DataGridViewContentAlignment.MiddleCenter,
                Font = new Font("微软雅黑", 9)
            };
            this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;//自动调节列标题高度
            this.ColumnHeadersVisible = true;//显示列标题
            //this.ReadOnly = true;
            this.RowHeadersDefaultCellStyle = new DataGridViewCellStyle//行标题居中
            {
                Alignment = DataGridViewContentAlignment.MiddleCenter,
                Font = new Font("微软雅黑", 9)

            };
            this.RowHeadersVisible = true;//显示行标题
            this.RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.AutoSizeToAllHeaders;

            this.RowsDefaultCellStyle = new DataGridViewCellStyle
            {
                Alignment = DataGridViewContentAlignment.MiddleLeft,
                Font = new Font("微软雅黑", 9)
            };
            this.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;//单元格选择模式
            //右键控件绑定
            contextMenuStrip = new ContextMenuStrip
            {
                Name = "cms1"
            };
            ToolStripItem Copy = contextMenuStrip.Items.Add("复制（Ctrl+C）");//右键复制控件
            ToolStripItem Paste =  contextMenuStrip.Items.Add("粘贴（Ctrl+V）");//右键粘贴控件
            Copy.Click += Copy_Click;
            Paste.Click += Paste_Click;
            //this.ContextMenuStrip = contextMenuStrip;
            //事件
            this.RowsAdded += DataGridView_RowsAdded;//侧边栏序号生成
            this.RowsRemoved += DataGridView_RowsRemoved;//侧边栏序号生成
            this.MouseUp += DataGridView_MouseUp;
            this.KeyDown += DataGridView_KeyDown;


            



            for (int i = 1; i < 9; i++)
            {
                //添加列
                int index = this.Columns.Add("aaa" + i.ToString(), "asasasaas");
                this.Columns[index].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
                this.Columns[index].SortMode = DataGridViewColumnSortMode.NotSortable;
            }
            for (int i = 0; i < 10; i++)
            {
                int index = this.Rows.Add();

                int a = 1;
                foreach (DataGridViewCell cell in this.Rows[index].Cells)
                {
                    cell.Value = a.ToString();
                    a++;
                }
            }
        }
        /// <summary>
        /// ctrl+C、ctrl+V
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DataGridView_KeyDown(object sender, KeyEventArgs e)//ctrl+C、ctrl+V
        {
            if (e.Control && e.KeyCode == Keys.C)
            {
                Copy_Click(new object(), new EventArgs());
            }
            if (e.Control && e.KeyCode == Keys.V)
            {
                Paste_Click(new object(), new EventArgs());
            }
        }
        /// <summary>
        /// 右键复制
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Copy_Click(object sender, EventArgs e)//右键复制
        {
            if (this.SelectedCells.Count > 0)
            {
                string copy_str = "";
                foreach (DataGridViewRow datagridviewrow in this.Rows)
                {
                    string cell_str = "";
                    foreach (DataGridViewCell cell in datagridviewrow.Cells)
                    {
                        foreach (DataGridViewCell cell_s in this.SelectedCells)
                        {
                            if (cell == cell_s)
                            {
                                cell_str = cell_str + cell.Value.ToString() + "    ";
                            }
                        }
                        //消除最后一个tab
                    }
                    if (cell_str != "")
                    {
                        cell_str = cell_str.Substring(0, cell_str.Length - 1);
                        copy_str = copy_str + cell_str + "\r\n";
                    }
                }
                Clipboard.SetText(copy_str);
            }
        }
        /// <summary>
        /// 右键粘贴
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Paste_Click(object sender, EventArgs e)//右键粘贴
        {
            foreach (DataGridViewCell cell in dataGridViewCells)
            {
                if (cell.Displayed)
                {
                    cell.ContextMenuStrip = null;
                }
            }
            List<DataGridViewCell> selectcells = new List<DataGridViewCell>();//粘贴成功的cell集合
            string context = Clipboard.GetText();
            List<List<string>> contexts = StrToList(context);
            List<int> row_indexs = new List<int>();
            List<int> Column_indexs = new List<int>();
            foreach (DataGridViewCell cell in this.SelectedCells)
            {
                row_indexs.Add(cell.RowIndex);
                Column_indexs.Add(cell.ColumnIndex);
            }
            row_indexs.Sort();
            Column_indexs.Sort();

            int star_row_index = row_indexs[0];
            foreach (List<string> str_rows in contexts)
            {
                int star_Column_index = Column_indexs[0];
                foreach (string str_cell in str_rows)
                {
                    try
                    {
                        if (this.Rows[star_row_index].Cells[star_Column_index].ReadOnly == false)
                        {
                            this.Rows[star_row_index].Cells[star_Column_index].Value = str_cell;
                            selectcells.Add(this.Rows[star_row_index].Cells[star_Column_index]);
                        }
                        else
                        {
                            this.Rows[star_row_index].Cells[star_Column_index].Selected = false;
                        }
                    }
                    catch (Exception)
                    {
                    }
                    star_Column_index++;
                }
                star_row_index++;
            }
            foreach (DataGridViewCell cell in selectcells)
            {
                cell.Selected = true;
                cell.ContextMenuStrip = contextMenuStrip;
                dataGridViewCells.Add(cell);
            }
        }
        /// <summary>
        /// 当前选择CELL的备份列表
        /// </summary>
        private List<DataGridViewCell> dataGridViewCells = new List<DataGridViewCell>();
        /// <summary>
        /// 鼠标单击框选单元格事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DataGridView_MouseUp(object sender, MouseEventArgs e)//鼠标单击框选单元格事件
        {
            
            if (e.Button == MouseButtons.Left)
            {
                foreach (DataGridViewCell cell in dataGridViewCells)
                {
                    if (cell.Displayed)
                    {
                        cell.ContextMenuStrip = null;
                    }
                }
                if (this.SelectedCells.Count > 0)
                {
                    foreach (DataGridViewCell cell in this.SelectedCells)
                    {
                        cell.ContextMenuStrip = contextMenuStrip;
                        dataGridViewCells.Add(cell);
                    }
                }
            }
        }
        /// <summary>
        /// 侧边栏序号生成
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DataGridView_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)//侧边栏序号生成
        {
            if (this.Rows.Count > 0)
            {
                for (int i = 0; i < e.RowCount; i++)
                {
                    this.Rows[e.RowIndex + i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
                    this.Rows[e.RowIndex + i].HeaderCell.Value = (e.RowIndex + i + 1).ToString();
                }

                for (int i = e.RowIndex + e.RowCount; i < this.Rows.Count; i++)
                {
                    this.Rows[i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
                    this.Rows[i].HeaderCell.Value = (i + 1).ToString();
                }
            }
        }
        /// <summary>
        /// 侧边栏序号生成
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void DataGridView_RowsRemoved(object sender, DataGridViewRowsRemovedEventArgs e)//侧边栏序号生成
        {
            if (this.Rows.Count > 0)
            {
                for (int i = 0; i < e.RowCount; i++)
                {
                    if (e.RowIndex + i < this.Rows.Count)
                    {
                        this.Rows[e.RowIndex + i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
                        this.Rows[e.RowIndex + i].HeaderCell.Value =(e.RowIndex + i + 1).ToString();
                    }
                }

                for (int i = e.RowIndex + e.RowCount; i < this.Rows.Count; i++)
                {
                    if (i < this.Rows.Count)
                    {
                        this.Rows[i].HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
                        this.Rows[i].HeaderCell.Value =(i + 1).ToString();
                    }
                }
            }
        }
        /// <summary>
        /// 粘贴板数据整理成表
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private List<List<string>> StrToList(string context)
        {
            List<List<string>> contexts = new List<List<string>>();
            int StarIndex = 0;
            while (context.IndexOf("\r\n", StarIndex) != -1)
            {
                int EbdIndex = context.IndexOf("\r\n", StarIndex);
                string str_row = context.Substring(StarIndex, EbdIndex - StarIndex);
                int str_row_StarIndex = 0;
                List<string> cells = new List<string>();
                while (str_row.IndexOf("    ", str_row_StarIndex) != -1)
                {
                    int str_row_EbdIndex = str_row.IndexOf("    ", str_row_StarIndex);
                    string cell = str_row.Substring(str_row_StarIndex, str_row_EbdIndex - str_row_StarIndex);
                    cells.Add(cell);
                    str_row_StarIndex = str_row_EbdIndex + 1;
                    if (str_row_StarIndex > str_row.Length - 1)
                    {
                        break;
                    }
                }
                cells.Add(str_row.Substring(str_row_StarIndex, str_row.Length - str_row_StarIndex));
                contexts.Add(cells);
                StarIndex = EbdIndex + 2;
                if (StarIndex > context.Length - 1)
                {
                    break;
                }
            }
            return contexts;
        }
    }
}

标签：控件,Rows,表格,index,DataGridView,cell,str,new,row
来源： https://www.cnblogs.com/zhemingxiangyixiu/p/16282645.html

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