如何使用 C# 更新现有的 excel xls 格式字段

Question

使用 C# .NET (.XLS) 格式更新现有 Excel 文件中的指定字段

Answer 1

我只想使用 C# .NET (.XLS) 格式更新现有 Excel 文件

此代码工作正常谢谢

String sConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + newFile + ";Extended Properties='Excel 8.0;HDR=NO'";
OleDbConnection objConn = new OleDbConnection(sConnectionString);
objConn.Open();

OleDbCommand selectCmd = new OleDbCommand("SELECT * FROM [Sheet1$]", objConn);

OleDbDataAdapter xlAdapter = new OleDbDataAdapter();
xlAdapter.SelectCommand = selectCmd;

DataSet xlDataset = new DataSet();

xlAdapter.Fill(xlDataset, "XLData");

xlAdapter.Dispose();
selectCmd.Dispose();

var thisDates = fDate.ToString("dd/MM/yyyy").Trim() + " TO " +
                                    tDate.ToString("dd/MM/yyyy").Trim();

OleDbCommand cmdUpDates = new OleDbCommand("UPDATE [Sheet1$C5:C5] SET F1='" + thisDates + "'", objConn);
cmdUpDates.ExecuteNonQuery();
cmdUpDates.Dispose();

var totalRows = xlDataset.Tables[0].Rows.Count;

for (int z = 0; z < totalRows; z++)
{
    DataRow item = xlDataset.Tables[0].Rows[z];

    Int32 oQtyBon = 0;

    var idx = z + 1;

    OleDbCommand cmdUpOpening = new OleDbCommand
    ("UPDATE [Sheet1$E" + idx + ":E" + idx + "] SET F1=" + oQtyBon, objConn);
    cmdUpOpening.ExecuteNonQuery();
    cmdUpOpening.Dispose();
}

objConn.Close();
objConn.Dispose();