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C# Winform实现导入和导出Excel文件

2019-01-23 12:21 971 查看

本文实例为大家分享了Winform实现导入导出Excel文件的具体代码，供大家参考，具体内容如下

/// <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;
}

读取Excel文件数据到DataTable

/// <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");
}
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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