第一种方式：
```csharp
public DataTable GetPagedTable(DataTable dt, int PageIndex, int PageSize)
{
if (PageIndex == 0)
return dt; // 0页代表每页数据，直接返回
DataTable newdt = dt.Copy();
newdt.Clear(); // copy dt的框架
int rowbegin = (PageIndex - 1) * PageSize;
int rowend = PageIndex * PageSize;
if (rowbegin >= dt.Rows.Count)
return newdt; // 源数据记录数小于等于要显示的记录，直接返回dt
if (rowend > dt.Rows.Count)
rowend = dt.Rows.Count;
for (int i = rowbegin; i <= rowend - 1; i++)
{
DataRow newdr = newdt.NewRow();
DataRow dr = dt.Rows[i];
foreach (DataColumn column in dt.Columns)
{
newdr[column.ColumnName] = dr[column.ColumnName];
}
newdt.Rows.Add(newdr);
}
return newdt;
}
```
第二种方式：
```csharp
public DataRow[] GetTableRows(DataTable dtAllEas, int PageIndex, int PageSize)
{
var rows = dtAllEas.AsEnumerable(); // 将DataTable转换为IEnumerable
var curRows = rows.Skip(PageIndex).Take(PageSize).ToArray(); // 获取当前页的行数据
}
```
