C#winform从数据集导出Excel(带指定Excel样式)

利用数据集作为数据源，在winform中导出Excel。

1、首先要确保使用的机器安装Office工具。 然后在工程中添加如下引用。



2、建立一个强类型的数据集



3、在这个强类型数据集里面建立一个dataAdapter，用于对Product表进行查询。



4、建立一个winform的应用程序，添加一个窗体，在窗体上添加一个button。



5、下面我们开始写代码了。

首先，添加如下引用。


using Microsoft.Office.Interop;


using Microsoft.Office.Interop.Excel;

然后，实现以下代码。


namespace WindowsApplication1




...{


public partial class Form1 : Form




...{


public Form1()




...{


InitializeComponent();


}


private Microsoft.Office.Interop.Excel.Application myExcel = null;


private void button1_Click(object sender, EventArgs e)




...{


List<Process> excelProcesses = GetExcelProcesses();


if (excelProcesses.Count > 0)




...{


MessageBox.Show("请将其他的Excel关闭再进行导出！");


}




if (myExcel == null)


myExcel = new Microsoft.Office.Interop.Excel.Application();




//效率低


//ExprotExcel1();


//效率低




//效率高


ExprotExcel2();


//效率高


}




private void ExprotExcel2()




...{


//强类型数据集包含的Products表


dsProducts.ProductsDataTable productsTable = new dsProducts.ProductsDataTable();


productsTable.AcceptChanges();


this.Cursor = Cursors.WaitCursor;


//保存文化环境


System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;


System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");


//保存文化环境




Workbook workbookData = myExcel.Workbooks.Add(Missing.Value);


Worksheet xlSheet = (Microsoft.Office.Interop.Excel.Worksheet)workbookData.Worksheets[1];




xlSheet.Name = "Products Table In Northwind";




myExcel.Visible = true;




myExcel.Cells[1, 1] = "Northwind数据库产品表";//默认的就是在sheet1里面的。




WorksheetClass wsClass = new WorksheetClass();


//设置主标题单元格的样式


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).MergeCells = true;//合并单元格


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).HorizontalAlignment = XlHAlign.xlHAlignCenter;//水平对齐方式


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).VerticalAlignment = XlVAlign.xlVAlignBottom;//垂直对齐方式


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).Font.Bold = true;//字体加粗


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).Font.ColorIndex = 0;//字体颜色


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).Font.Italic = true;//是否斜体


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).Font.Size = 22;//字体大小


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).Borders.LineStyle = XlLineStyle.xlContinuous;//边框样式


xlSheet.get_Range(xlSheet.Cells[1, 1], xlSheet.Cells[1, 10]).RowHeight = 33.75;//行高


//设置主标题单元格的样式




//设置标题单元格样式


xlSheet.get_Range(xlSheet.Cells[2, 1], xlSheet.Cells[2, 10]).RowHeight = 22.75;//行高


xlSheet.get_Range(xlSheet.Cells[2, 1], xlSheet.Cells[2, 1]).ColumnWidth = 33.75;//列宽


//设置标题单元格样式




//填充标题


for (int i = 0; i < productsTable.Columns.Count; i++)




...{


myExcel.Cells[2, i + 1] = productsTable.Columns[i].Caption;


}


//填充标题




//获得数据表的值


dsProductsTableAdapters.ProductsTableAdapter adtProducts = new WindowsApplication1.dsProductsTableAdapters.ProductsTableAdapter();


productsTable = adtProducts.GetProducts();//获得数据库所有的Products


//获得数据表的值


int RowCount = productsTable.Rows.Count;


int colCount = productsTable.Columns.Count;


//设置填充单元格样式


xlSheet.get_Range(xlSheet.Cells[3, 1], xlSheet.Cells[RowCount, colCount]).Borders.LineStyle = XlLineStyle.xlContinuous;//边框的样式


//设置填充单元格样式


object[,] objData = new object[RowCount, colCount];




//将DataTable里的值填充到对象数组中


for (int i = 0; i < RowCount; i++)




...{


for (int j = 0; j < colCount; j++)




...{


objData[i, j] = productsTable.Rows[i][j].ToString();


}


System.Windows.Forms.Application.DoEvents();


}


//将DataTable里的值填充到对象数组中




//将对象数组的值赋值给Excel


Range range = xlSheet.get_Range(xlSheet.Cells[3, 1], xlSheet.Cells[RowCount + 2, colCount]);


range.Value2 = objData;


//将对象数组的值赋值给Excel




//恢复文化环境


System.Threading.Thread.CurrentThread.CurrentCulture = CurrentCI;


//恢复文化环境


try




...{


myExcel.Save(@"C:a.xls");


myExcel.Quit();


this.Cursor = Cursors.Default;


MessageBox.Show("导出成功！", "恭喜", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);


}


finally




...{


//释放资源


System.Runtime.InteropServices.Marshal.ReleaseComObject(xlSheet);


System.Runtime.InteropServices.Marshal.ReleaseComObject(workbookData);


System.Runtime.InteropServices.Marshal.ReleaseComObject(range);


System.Runtime.InteropServices.Marshal.ReleaseComObject(myExcel);


GC.Collect();


range = null;


xlSheet = null;


workbookData = null;


myExcel = null;


KillTheExcel();


//释放资源


}


}






/**//// <summary>


/// 效率低的方法


/// </summary>


private void ExprotExcel1()




...{


List<Process> processes = GetExcelProcesses();


if (processes.Count > 0)




...{


MessageBox.Show("请关闭其他的Excel程序，以便进行导出！");


return;


}


dsProducts.ProductsDataTable productsTable = new dsProducts.ProductsDataTable();


productsTable.AcceptChanges();


this.Cursor = Cursors.WaitCursor;


//保存文化环境


System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;


System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");


//保存文化环境




myExcel.Application.Workbooks.Add(true);




myExcel.Visible = true;


myExcel.Cells[1, 1] = "Northwind数据库产品表";




//填充标题


for (int i = 0; i < productsTable.Columns.Count; i++)




...{


myExcel.Cells[2, i + 1] = productsTable.Columns[i].Caption;


}


//填充标题




dsProductsTableAdapters.ProductsTableAdapter adtProducts = new WindowsApplication1.dsProductsTableAdapters.ProductsTableAdapter();


productsTable = adtProducts.GetProducts();






/**////效率低


//填充数据


for (int i = 0; i < productsTable.Rows.Count; i++)




...{


for (int j = 0; j < productsTable.Columns.Count; j++)




...{


if (productsTable.Rows[i][j].GetType() == typeof(System.String))




...{


//从第3行开始


myExcel.Cells[i + 3, j + 1] = "'" + productsTable.Rows[i][j].ToString();


}


else




...{


//从第3行开始


myExcel.Cells[i + 3, j + 1] = productsTable.Rows[i][j].ToString();


}


}


}


//填充数据




/**////效率低




//恢复文化环境


System.Threading.Thread.CurrentThread.CurrentCulture = CurrentCI;


//恢复文化环境


this.Cursor = Cursors.Default;


MessageBox.Show("导出成功！", "恭喜", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);


}






/**//// <summary>


/// 效率高的方法


/// </summary>


private void KillTheExcel()




...{




/**////下面三句话根本没办法杀掉Excel进程，知道的同志请发Email:firewood001@yahoo.com.cn告知


//myExcel.Quit();


//System.Runtime.InteropServices.Marshal.ReleaseComObject(myExcel);


//GC.Collect();


KillAllExcel();


}






/**//// <summary>


/// 获得所有的Excel进程


/// </summary>


/// <returns>所有的Excel进程</returns>


private List<Process> GetExcelProcesses()




...{


Process[] processes = Process.GetProcesses();


List<Process> excelProcesses = new List<Process>();




for (int i = 0; i < processes.Length; i++)




...{


if (processes[i].ProcessName.ToUpper() == "EXCEL")


excelProcesses.Add(processes[i]);


}




return excelProcesses;


}




private void Form1_FormClosing(object sender, FormClosingEventArgs e)




...{


MessageBox.Show("系统退出将windows所有的Excel，请保存！");


KillAllExcel();


}




private void KillAllExcel()




...{


List<Process> excelProcess = GetExcelProcesses();


for (int i = 0; i < excelProcess.Count; i++)




...{


excelProcess[i].Kill();


}


}




}


}