c# - 如何从具有多个表的数据集中生成多个 csv 文件

Question

我想从 Dataset 生成多个不同的 .csv 文件(里面有很多表)

我试过如下但不知道生成不同 csv 的代码。

 public string GenerateCSVfiles(List<DataSet> dataSets)
        {
               //create csv file
            foreach (DataRow row in dataTable.Rows)
            {
                for (int i = 0; i < dataTable.Columns.Count; i++)
                {
                    result.Append(row[i].ToString());
                    result.Append(i == dataTable.Columns.Count - 1 ? "\n" : ",");
                }
            }

            return result.ToString();

            }

            //return Files in .zip;
        }

Answer 1

试试这个代码:csv 文件名是使用数据表名称生成的:

public void GenerateCSVfiles(DataSet dataSets)
{
    //create csv file
    StreamWriter sw = null;
    StringBuilder sb = new StringBuilder();
    foreach (DataTable dataTable in dataSets.Tables)
    {
        sw = new StreamWriter(string.Format(@"C:\Temp\{0}.csv", dataTable.TableName));

        for (int i = 0; i < dataTable.Rows.Count; i++)
        {
            sb.Clear();

            for (int j = 0; j < dataTable.Columns.Count; j++)
            {
                sb.Append(dataTable.Rows[i][j]);
                if (j != (dataTable.Columns.Count - 1)) sb.Append(",");
            }
            sw.WriteLine(sb.ToString());
        }
        sw.Close();
    }
}