二维数组转datatable的代码 转自http://access911.net/ocr/doc1.asp?mode=a&bid=005201&aid=5226970
这样更简洁：
string[,] b = new string[2,3] {{"11", "12", "13"}, {"21", "22", "23"}};
DataTable dt = new DataTable();
DataRow dr ;
for (int i = 0; i < b.GetLength(1); i++)
{
dt.Columns.Add(i.ToString());
}
for (int i = 0; i < b.GetLength(0); i++)
{
dr = dt.NewRow();
for (int j = 0; j < b.GetLength(1); j++)
{
dr[j] = b[i, j];
}
dt.Rows.Add(dr);
}