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/// <summary>

/// 导出Excel文件

/// </summary>

/// /// <param name="dataSet"></param>

/// <param name="dataTable">数据集</param>

/// <param name="isShowExcle">导出后是否打开文件</param>

/// <returns></returns>

public static bool DataTableToExcel(string filePath, System.Data.DataTable dataTable, bool isShowExcle)

{

//System.Data.DataTable dataTable = dataSet.Tables[0];

int rowNumber = dataTable.Rows.Count;

int columnNumber = dataTable.Columns.Count;

int colIndex = 0;

if (rowNumber == 0)

{

return false;

}

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

Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);

Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];

excel.Visible = isShowExcle;

Microsoft.Office.Interop.Excel.Range range;

foreach (DataColumn col in dataTable.Columns)

{

colIndex++;

excel.Cells[1, colIndex] = col.ColumnName;

}

object[,] objData = new object[rowNumber, columnNumber];

for (int r = 0; r < rowNumber; r++)

{

for (int c = 0; c < columnNumber; c++)

{

objData[r, c] =dataTable.Rows[r][c];

}

}

range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]);

range.Value2 = objData;

range.NumberFormatLocal = "@";

worksheet.SaveAs(filePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

//excel.Quit();

return true;

}

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/// <summary>

/// 读取Excel文件数据到DataTable

/// </summary>

/// <param name="filePath">Excel文件路径</param>

private void Import_Excel(string filePath)

{

string sqlconn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=False;IMEX=1'";

string sql = @"select * from [Sheet1$]";

try

{

using (OleDbConnection conn = new OleDbConnection(sqlconn))

{

using (OleDbDataAdapter adapter = new OleDbDataAdapter(sql, conn))

{

System.Data.DataTable dt = new System.Data.DataTable();

adapter.Fill(dt);

this.LoadDataGridView(dt);

}

}

}

catch (Exception ex)

{

MessageBox.Show("打开文件出错，错误信息：" + ex.Message.ToString(), "提示");

}

}