datatable中进行行列的转置

在datatable中进行行列的转置，所以先将您的数据都填充到datatable中。
假设您的原始datatale是dt,在dt后加入下面的语句

DataTable dtNew = new DataTable();
dtNew.Columns.Add("ColumnName", typeof(string));
for (int i = 0; i < dt.Rows.Count; i++)
{
dtNew.Columns.Add("Column" + (i + 1).ToString(), typeof(string));
}
foreach (DataColumn dc in dt.Columns)
{
DataRow drNew = dtNew.NewRow();
drNew["ColumnName"] = dc.ColumnName;
for (int i = 0; i < dt.Rows.Count; i++)
{
drNew[i + 1] = dt.Rows[i][dc].ToString();
}
dtNew.Rows.Add(drNew);
}