C# dataGridView生成12号4列的表格
private void Form1_Load(object sender, EventArgs e)
{// 清除默认列dataGridView1.Columns.Clear();// 添加4列（首列为序号列）dataGridView1.Columns.Add("ColIndex", "序号");dataGridView1.Columns.Add("Col2", "列2");dataGridView1.Columns.Add("Col3", "列3");dataGridView1.Columns.Add("Col4", "列4");// 添加12行数据for (int i = 0; i < 12; i++){int rowIndex = dataGridView1.Rows.Add();dataGridView1.Rows[rowIndex].Cells[0]().Value = i + 1; // 首列填充1-12}
}
第一行的特殊处理
// 在循环中添加条件判断
if (rowIndex > 0) // 跳过第一行（索引0）
{dataGridView1.Rows[rowIndex].Cells[0]().Value = rowIndex; // 从1开始填充
}
自动生成行号（行头显示）
// 在RowPostPaint事件中绘制行号
private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{var grid = sender as DataGridView;using (SolidBrush brush = new SolidBrush(grid.RowHeadersDefaultCellStyle.ForeColor)){// 行号位置微调e.Graphics.DrawString((e.RowIndex + 1).ToString(),grid.DefaultCellStyle.Font,brush,new PointF(e.RowBounds.X + 20, e.RowBounds.Y + 4));}
}
关键配置
禁止自动生成列：dataGridView1.AutoGenerateColumns = false;
禁止选中首行：dataGridView1.ClearSelection();
列宽自适应：
dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
手动输入整型字符
完整代码如下：
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 VMPro2024._08.WinForm
{public partial class CalibrationForm : Form{public CalibrationForm(){InitializeComponent();正极平台_dataGridView.CellValidating += 正极平台_dataGridView_CellValidating;}private void CalibrationForm_Load(object sender, EventArgs e){//设置4列正极平台_dataGridView.ColumnCount = 4;正极像素_dataGridView.ColumnCount = 4;负极平台_dataGridView.ColumnCount = 4;负极像素_dataGridView.ColumnCount = 4;//添加12行空数据for (int i = 0; i < 12; i++){int indexRow1 = 正极平台_dataGridView.Rows.Add();正极平台_dataGridView.Rows[i].Cells[0].Value = indexRow1 + 1;int indexRow2 = 正极像素_dataGridView.Rows.Add();正极像素_dataGridView.Rows[i].Cells[0].Value = indexRow2 + 1;int indexRow3 = 负极平台_dataGridView.Rows.Add();负极平台_dataGridView.Rows[i].Cells[0].Value = indexRow3 + 1;int indexRow4 = 负极像素_dataGridView.Rows.Add();负极像素_dataGridView.Rows[i].Cells[0].Value = indexRow4 + 1;}正极平台_dataGridView.RowHeadersWidth = 60;正极像素_dataGridView.RowHeadersWidth = 60;负极平台_dataGridView.RowHeadersWidth = 60;负极像素_dataGridView.RowHeadersWidth = 60;//允许直接编辑正极平台_dataGridView.EditMode = DataGridViewEditMode.EditOnKeystroke;正极像素_dataGridView.EditMode = DataGridViewEditMode.EditOnKeystroke;负极平台_dataGridView.EditMode = DataGridViewEditMode.EditOnKeystroke;负极像素_dataGridView.EditMode = DataGridViewEditMode.EditOnKeystroke;//强制取消第一列的只读属性正极平台_dataGridView.Columns[1].ReadOnly = false;}private void 负极平台_dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e){}private DataGridViewTextBoxEditingControl cellEdit;//声明编辑控件/// <summary>/// 通过事件限制输入类型/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void 正极平台_dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e){if (正极平台_dataGridView.CurrentCell.ColumnIndex == 1|| 正极平台_dataGridView.CurrentCell.ColumnIndex == 2 ||正极平台_dataGridView.CurrentCell.ColumnIndex == 3){TextBox tb = e.Control as TextBox;if (tb != null){tb.KeyPress += new KeyPressEventHandler(Tb_KeyPress);}}}private void Tb_KeyPress(object sender, KeyPressEventArgs e){if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && e.KeyChar != '-' && e.KeyChar != (char)Keys.Back){e.Handled = true;// 阻止无效输入 MessageBox.Show("仅允许输入整数!");}else{e.Handled = false;正极平台_dataGridView.Rows[正极平台_dataGridView.CurrentCell.RowIndex].ErrorText = "";}// 负号只能出现在首位if (e.KeyChar == '-' && ((TextBox)sender).SelectionStart != 0){e.Handled = true;}}/// <summary>/// 在单元格结束编辑时验证输入内容是否为整数：/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void 正极平台_dataGridView_CellValidating(object sender, DataGridViewCellValidatingEventArgs e){if (正极平台_dataGridView.IsCurrentCellInEditMode){if (e.ColumnIndex == 1 || e.ColumnIndex == 2 || e.ColumnIndex == 3){//单元格值为空时触发string input = e.FormattedValue.ToString();if (!string.IsNullOrEmpty(input) && !int.TryParse(e.FormattedValue.ToString(), out _)){e.Cancel = true;MessageBox.Show("输入内容必须为整数!");}else{e.Cancel = false;}}}}private void 正极平台_dataGridView_CellEndEdit(object sender, DataGridViewCellEventArgs e){if (正极平台_dataGridView.EditingControl is TextBox tb){tb.KeyPress -= Tb_KeyPress;}//清除错误提示正极平台_dataGridView.Rows[e.RowIndex].ErrorText = "";} }
}效果图：
