对DataTable进行分页
C#
/// <summary>
/// 对DataTable进行分页,起始页为1
/// </summary>
/// <param name="dt"></param>
/// <param name="PageIndex"></param>
/// <param name="PageSize"></param>
/// <returns></returns> public static DataTable GetPagedTable(DataTable dt, int PageIndex, int PageSize)
{
if (PageIndex == 0)
return dt;
DataTable newdt = dt.Copy();
newdt.Clear();
int rowbegin = (PageIndex - 1) * PageSize;
int rowend = PageIndex * PageSize;
if (rowbegin >= dt.Rows.Count)
return newdt;
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;
}
VB
Public Shared Function GetPagedTable(ByVal dt As DataTable, ByVal PageIndex As Integer, ByVal PageSize As Integer) As DataTable
If PageIndex = 0 Then
Return dt
End If
Dim newdt As DataTable = dt.Copy()
newdt.Clear()
Dim rowbegin As Integer = (PageIndex - 1) * PageSize
Dim rowend As Integer = PageIndex * PageSize
If rowbegin >= dt.Rows.Count Then
Return newdt
End If
If rowend > dt.Rows.Count Then
rowend = dt.Rows.Count
End If
For i As Integer = rowbegin To rowend - 1
Dim newdr As DataRow = newdt.NewRow()
Dim dr As DataRow = dt.Rows(i)
For Each column As DataColumn In dt.Columns
newdr(column.ColumnName) = dr(column.ColumnName)
Next
newdt.Rows.Add(newdr)
Next
Return newdt
End Function