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XingCheng3
2026-05-11 11:09:04 +08:00
commit 79c0f9cd43
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SCADA/Pages/CrudHelper.cs Normal file
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using System;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Windows.Forms;
namespace MesWork.Pages
{
/// <summary>
/// CRUD页面通用辅助方法（搜索框交互、弹窗控件创建、Excel导出）
/// </summary>
public static class CrudHelper
{
// ====================================================================
// 搜索框占位提示交互
// ====================================================================
/// <summary>
/// 搜索框获得焦点时清除占位提示
/// </summary>
public static void SearchBox_GotFocus(TextBox txt, string hint)
{
if (txt.Text == hint) { txt.Text = ""; txt.ForeColor = Color.FromArgb(31, 41, 55); }
}
/// <summary>
/// 搜索框失去焦点时恢复占位提示
/// </summary>
public static void SearchBox_LostFocus(TextBox txt, string hint)
{
if (string.IsNullOrWhiteSpace(txt.Text)) { txt.Text = hint; txt.ForeColor = Color.FromArgb(156, 163, 175); }
}
/// <summary>
/// 搜索框回车触发搜索
/// </summary>
public static bool SearchBox_KeyDown(KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter) { e.SuppressKeyPress = true; return true; }
return false;
}
/// <summary>
/// 获取搜索框的实际搜索关键词（排除占位提示）
/// </summary>
public static string GetSearchKeyword(TextBox txt, string hint)
{
return txt.Text == hint ? "" : txt.Text.Trim();
}
// ====================================================================
// 编辑弹窗辅助
// ====================================================================
/// <summary>
/// 创建标准编辑弹窗框架（统一样式 + 确定/取消按钮）
/// </summary>
public static Form CreateEditDialog(string title, int width, int height)
{
var dlg = new Form
{
Text = title,
Size = new Size(width, height),
StartPosition = FormStartPosition.CenterParent,
FormBorderStyle = FormBorderStyle.FixedDialog,
MaximizeBox = false,
MinimizeBox = false,
BackColor = Color.White,
Font = new Font("微软雅黑", 11F)
};
return dlg;
}
/// <summary>
/// 向弹窗添加确定/取消按钮
/// </summary>
public static (Button btnOk, Button btnCancel) AddDialogButtons(Form dlg, ref int y)
{
y += 16;
var btnOk = new Button
{
Text = "确 定", BackColor = Color.FromArgb(74, 144, 217), ForeColor = Color.White,
FlatStyle = FlatStyle.Flat, Size = new Size(120, 36), Location = new Point(80, y),
DialogResult = DialogResult.OK
};
btnOk.FlatAppearance.BorderSize = 0;
var btnCancel = new Button
{
Text = "取 消", BackColor = Color.FromArgb(229, 231, 235), ForeColor = Color.FromArgb(55, 65, 81),
FlatStyle = FlatStyle.Flat, Size = new Size(120, 36), Location = new Point(220, y),
DialogResult = DialogResult.Cancel
};
btnCancel.FlatAppearance.BorderSize = 0;
dlg.Controls.Add(btnOk);
dlg.Controls.Add(btnCancel);
dlg.AcceptButton = btnOk;
dlg.CancelButton = btnCancel;
return (btnOk, btnCancel);
}
/// <summary>
/// 向弹窗添加文本输入字段
/// </summary>
public static TextBox AddTextField(Form dlg, string label, ref int y, string value, int labelX = 30, int inputX = 130, int inputWidth = 240, bool isPassword = false)
{
dlg.Controls.Add(new Label { Text = label, Location = new Point(labelX, y + 4), AutoSize = true });
var txt = new TextBox { Text = value ?? "", Location = new Point(inputX, y), Size = new Size(inputWidth, 28), BorderStyle = BorderStyle.FixedSingle };
if (isPassword) txt.PasswordChar = '*';
dlg.Controls.Add(txt);
y += 42;
return txt;
}
/// <summary>
/// 向弹窗添加下拉选择字段
/// </summary>
public static ComboBox AddComboField(Form dlg, string label, ref int y, string[] items, string selected, int labelX = 30, int inputX = 130, int inputWidth = 240)
{
dlg.Controls.Add(new Label { Text = label, Location = new Point(labelX, y + 4), AutoSize = true });
var cmb = new ComboBox { Location = new Point(inputX, y), Size = new Size(inputWidth, 28), DropDownStyle = ComboBoxStyle.DropDownList };
cmb.Items.AddRange(items);
cmb.Text = selected ?? items[0];
dlg.Controls.Add(cmb);
y += 42;
return cmb;
}
// ====================================================================
// 导出Excel通用方法
// ====================================================================
/// <summary>
/// 通用的Excel导出流程（弹出保存对话框→查全量数据→NPOI导出→打开文件位置）
/// </summary>
/// <param name="sheetName">Excel工作表名称（如"工件管理"）</param>
/// <param name="defaultFileName">默认文件名（如"工件管理"，会自动加时间后缀）</param>
/// <param name="queryAllData">查询全量数据的委托，返回DataTable</param>
/// <param name="hasData">当前是否有数据可导出</param>
public static void ExportToExcel(string sheetName, string defaultFileName, Func<DataTable> queryAllData, bool hasData)
{
if (!hasData)
{
MessageBox.Show("没有数据可导出，请先查询", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
using (var sfd = new SaveFileDialog())
{
sfd.Filter = "Excel 文件|*.xlsx";
sfd.FileName = $"{defaultFileName}_{DateTime.Now:yyyyMMdd_HHmmss}.xlsx";
sfd.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
if (sfd.ShowDialog() == DialogResult.OK)
{
try
{
DataTable dt = queryAllData();
if (dt != null && dt.Rows.Count > 0)
{
bool exported = NPOITest.ExeclHelper.DataTableToExcel(dt, sheetName, sfd.FileName);
if (exported)
{
MessageBox.Show($"导出成功！共 {dt.Rows.Count} 条记录", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
System.Diagnostics.Process.Start("explorer.exe", $"/select,\"{sfd.FileName}\"");
}
else
{
MessageBox.Show("导出失败，请检查文件是否被占用", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
MessageBox.Show("查询全量数据失败，请重试", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
catch (Exception ex)
{
MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
}
}