标签：des datagridview style blog http io ar color os
昨天帮朋友做了个小工具，以完成多表连接处理一些数据。今天下班后又做了份使用文档，不知友能看懂否？现将使用文档及源码发布如下，以供有同样需求的朋友下载。
INSERT INTO [Employee$](EmployeeId,EmployeeName,BranchId) VALUES(‘YG2014120001‘,‘韩兆新‘,‘BM20141201‘);
执行Sql前：
执行Sql后：
UPDATE [Employee$] SET BranchId = ‘BM20141202‘;
执行Sql前：
执行Sql后：
SELECT EmployeeId,EmployeeName,BranchId FROM [Employee$];
显然不支持！
UPDATE [Employee$] SET EmployeeID=null,EmployeeName=null,BranchId=null WHERE EmployeeID=‘YG2014120003‘;
执行Sql前：
执行Sql后：
SELECT EmployeeId,EmployeeName,BranchId FROM [Employee$] WHERE EmployeeID = ‘YG2014120002‘;
SELECT * FROM [Employee$] WHERE EmployeeID LIKE ‘YG201412%‘;
1、*：所有列的名称；
2、%：通配n个字符；
3、_：通配1个字符。
1、升序：（ASC）可省略；
2、降序：（DSEC）。
示例1：（升序排序）
SELECT * FROM [Employee$] ORDER BY EmployeeId DESC;
示例2：（降序排序）
SELECT * FROM [Employee$] ORDER BY EmployeeId DESC;
示例3：（升序排序简写）
SELECT * FROM [Employee$] ORDER BY EmployeeId;
先建立两个用于演示的sheet：
Characters：
| ID | Character |
| 1 | 内向 |
| 2 | 外向 |
| 3 | 中性性格 |
Colors：
| ID | Color |
| 1 | 绿色 |
| 2 | 红色 |
| 4 | 蓝色 |
内连接（JOIN 或 INNER JOIN）：内连接取交集
示意图：
SELECT * FROM [characters$] INNER JOIN [colors$] ON [characters$].ID = [colors$].ID;
外连接可分为：左连接、右连接、完全外连接。
示意图：
SELECT * FROM [characters$] LEFT JOIN [colors$] ON [characters$].ID = [colors$].ID;
结果：
示意图：
SELECT * FROM [characters$] RIGHT JOIN [colors$] ON [characters$].ID = [colors$].ID;
示意图：
SELECT * FROM [characters$] LEFT JOIN [colors$] ON [characters$].ID = [colors$].ID
UNIONSELECT * FROM [characters$] RIGHT JOIN [colors$] ON [characters$].ID = [colors$].ID;
交叉连接产生连接所涉及的表的笛卡尔积。
SELECT * FROM [characters$],[colors$];
结果：
SELECT * FROM [characters$],[colors$] WHERE [characters$].ID = [colors$].ID;
SELECT * FROM [characters$],[colors$];
Program.cs
using System;using System.IO;using System.Windows.Forms;namespace SqlExcel{static class Program
{ /// <summary> /// 应用程序的主入口点。 /// </summary>[STAThread]
static void Main()
{ Sunisoft.IrisSkin.SkinEngine skinEngine = new Sunisoft.IrisSkin.SkinEngine();string skinPath = Application.StartupPath + Path.DirectorySeparatorChar + "skin" + Path.DirectorySeparatorChar + "skin.ssk";
skinEngine.SkinFile = skinPath;
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false); Application.Run(new MainForm());}
}
}
MainForm.cs
using System;using System.Data;using System.Data.Common;using System.Drawing;using System.Windows.Forms;namespace SqlExcel{public partial class MainForm : Form
{ public MainForm() {InitializeComponent();
}
/// <summary> /// 输入文件选择 /// </summary> /// <param name="sender"></param> /// <param name="e"></param>private void btnInFile_Click(object sender, EventArgs e)
{ OpenFileDialog openFileDlg = new OpenFileDialog(); openFileDlg.Filter = "Excel 2003文件|*.xls|Excel 2007文件|*.xlsx"; if (DialogResult.OK.Equals(openFileDlg.ShowDialog())) {txtInFile.Text = openFileDlg.FileName;
}
}
/// <summary> /// 执行Sql... /// </summary> /// <param name="sender"></param> /// <param name="e"></param>private void btnExecute_Click(object sender, EventArgs e)
{if (string.IsNullOrEmpty(txtInFile.Text.Trim()))
{MessageBox.Show("请选择输入文件！", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;}
if (string.IsNullOrEmpty(txtSql.Text.Trim()))
{MessageBox.Show("请输入Sql语句！", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;}
int linesNum = 0; double executionTime = 0.0;string resultInfo = string.Empty;
DataTable dtResult = null;tabResult.SelectedTab = tPageResultInfo;
try {if (txtSql.Text.ToLower().StartsWith("select"))
{ executionTime = CodeTimer.ExecuteCode(delegate() {dtResult = SqlHelper.ExecuteDataTable(txtInFile.Text, txtSql.Text);
});
tabResult.SelectedTab = tPageResult;
}
else { executionTime = CodeTimer.ExecuteCode(delegate() {linesNum = SqlHelper.ExecuteNonQuery(txtInFile.Text, txtSql.Text);
});
}
resultInfo = FormatResultInfo(txtSql.Text, linesNum, executionTime);
}
catch (Exception ex) {if (ex.Message.Equals("未在本地计算机上注册“Microsoft.Ace.OLEDB.12.0”提供程序。"))
{MessageBox.Show("本程序运行需安装：AccessDatabaseEngine，\r\n请安装后重试！", "系统警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else if (ex is DbException)
{MessageBox.Show(string.Format("Sql语句错误：“{0}”", ex.Message), "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else {MessageBox.Show(string.Format("发生未处理错误，请联系作者！\r\n错误信息：“{0}”", ex.Message), "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
resultInfo = FormatResultInfo(txtSql.Text, ex.Message);
}
finally {gvResult.DataSource = dtResult;
txtResultInfo.Text = resultInfo;
}
}
/// <summary> /// 到处结果数据 /// </summary> /// <param name="sender"></param> /// <param name="e"></param>private void btnExport_Click(object sender, EventArgs e)
{ DataTable dt = gvResult.DataSource as DataTable;if (null == dt)
{MessageBox.Show("无操作结果！", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;}
SaveFileDialog saveFileDlg = new SaveFileDialog(); saveFileDlg.Filter = "Excel 2003文件|*.xls|Excel 2007文件|*.xlsx"; if (DialogResult.OK.Equals(saveFileDlg.ShowDialog())) { try { ExcelHelper.DataTableToExcel(dt, "result", saveFileDlg.FileName);MessageBox.Show("导出成功", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.None);
}
catch (Exception ex) {MessageBox.Show(string.Format("导出失败，原因：“{0}”", ex.Message), "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
//显示行号private void gvResult_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{ Rectangle rectangle = new Rectangle(e.RowBounds.Location.X,e.RowBounds.Location.Y,
gvResult.RowHeadersWidth - 4,
e.RowBounds.Height);
TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(),
gvResult.RowHeadersDefaultCellStyle.Font,
rectangle,
gvResult.RowHeadersDefaultCellStyle.ForeColor,
TextFormatFlags.VerticalCenter | TextFormatFlags.Right);
}
#region 格式化Sql执行结果信息private string FormatResultInfo(string sql, int linesNum, double executionTime)
{return string.Format("[SQL]{0}\r\n受影响的行: {1}\r\n时间: {2}ms\r\n", sql, linesNum, executionTime);
}
private string FormatResultInfo(string sql, string errorInfo)
{return string.Format("[SQL]{0}\r\n[Err]{1}", sql, errorInfo);
}
#endregion}
}
using System;using System.Configuration;using System.Data;using System.Data.OleDb;namespace SqlExcel{static class SqlHelper
{private static string GetConnectionString(string dataSource)
{if (string.IsNullOrEmpty(dataSource))
{throw new Exception("数据源不能为空！");
}
return string.Format(ConfigurationManager.ConnectionStrings["Conn"].ConnectionString, dataSource);
}
public static DataTable ExecuteDataTable(string dataSource, string sql, params OleDbParameter[] parameters)
{using (OleDbConnection conn = new OleDbConnection(GetConnectionString(dataSource)))
{ using (OleDbCommand cmd = conn.CreateCommand()) {cmd.CommandText = sql;
cmd.Parameters.AddRange(parameters);
using (OleDbDataAdapter da = new OleDbDataAdapter(cmd))
{ DataTable dt = new DataTable();da.Fill(dt);
return dt;}
}
}
}
public static int ExecuteNonQuery(string dataSource, string sql, params OleDbParameter[] parameters)
{using (OleDbConnection conn = new OleDbConnection(GetConnectionString(dataSource)))
{conn.Open();
using (OleDbCommand cmd = conn.CreateCommand()) {cmd.CommandText = sql;
cmd.Parameters.AddRange(parameters);
return cmd.ExecuteNonQuery();}
}
}
}
}
ExcelHelper.cs
using System;using System.Data;using System.IO;using NPOI.HSSF.UserModel;using NPOI.SS.UserModel;using NPOI.XSSF.UserModel;namespace SqlExcel{static class ExcelHelper
{ #region 导出DataTable到Excel（Author：hanzhaoxin/2014-12-12）public static void DataTableToExcel(DataTable dtSource, string sheetName, string fileName)
{ string extension = Path.GetExtension(fileName);IWorkbook workbook;
if (extension.Equals(".xls"))
{ workbook = new HSSFWorkbook();}
else if (extension.Equals(".xlsx"))
{ workbook = new XSSFWorkbook();}
else {throw new Exception("不是有效的Excel格式！");
}
ISheet sheet = workbook.CreateSheet(sheetName);
IRow headerRow = sheet.CreateRow(0);
foreach (DataColumn cl in dtSource.Columns)
{headerRow.CreateCell(cl.Ordinal).SetCellValue(cl.ColumnName);
}
int rowIndex = 1;foreach (DataRow dr in dtSource.Rows)
{IRow dataRow = sheet.CreateRow(rowIndex);
foreach (DataColumn cl in dtSource.Columns)
{ #region SetCellValue switch (cl.DataType.ToString()) {case "System.String":
dataRow.CreateCell(cl.Ordinal).SetCellValue(dr[cl].ToString());
break;case "System.DateTime":
DateTime dtCellValue = new DateTime(); DateTime.TryParse(dr[cl].ToString(), out dtCellValue);dataRow.CreateCell(cl.Ordinal).SetCellValue(dtCellValue);
break;case "System.Boolean":
bool blCellValue;bool.TryParse(dr[cl].ToString(), out blCellValue);
dataRow.CreateCell(cl.Ordinal).SetCellValue(blCellValue);
break;case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.Byte":
int iCellValue;int.TryParse(dr[cl].ToString(), out iCellValue);
dataRow.CreateCell(cl.Ordinal).SetCellValue(iCellValue);
break;case "System.Decimal":
case "System.Double":
double doubCellValue;double.TryParse(dr[cl].ToString(), out doubCellValue);
dataRow.CreateCell(cl.Ordinal).SetCellValue(doubCellValue);
break;case "System.DBNull":
dataRow.CreateCell(cl.Ordinal).SetCellValue(""); break; default:dataRow.CreateCell(cl.Ordinal).SetCellValue(dr[cl].ToString());
break;}
#endregion}
rowIndex++;
}
using (FileStream fs = File.OpenWrite(fileName)) {workbook.Write(fs);
headerRow = null; sheet = null; workbook = null;}
}
#endregion}
}
CodeTimer.cs
using System.Diagnostics;namespace SqlExcel{delegate void Action();
static class CodeTimer
{public static double ExecuteCode(Action dgMethodName)
{ Stopwatch sw = new Stopwatch();sw.Start();
dgMethodName.Invoke();
sw.Stop();
return sw.Elapsed.TotalMilliseconds;}
}
}
App.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
<add name="Conn" connectionString="Provider=Microsoft.Ace.OLEDB.12.0;Extended Properties=Excel 12.0;Data Source={0};"/>
</connectionStrings>
</configuration>
因该程序运行需注册“Microsoft.Ace.OLEDB.12.0”，考虑到很多朋友没有安装。后面也会给出下载“AccessDatabaseEngine.exe”的链接。
下载地址：
SqlExcel源码：http://files.cnblogs.com/hanzhaoxin/SqlExcel%E6%BA%90%E7%A0%81.zip
AccessDatabaseEngine：http://www.microsoft.com/zh-cn/download/details.aspx?id=13255
标签：des datagridview style blog http io ar color os
原文地址：http://www.cnblogs.com/hanzhaoxin/p/4162147.html
