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：
