Datatable分页通用方法

代码

/// <summary>
/// DataTable分页
/// </summary>
/// <param name="dt">DataTable</param>
/// <param name="pageIndex">页索引,注意：从1开始</param>
/// <param name="pageSize">每页大小</param>
/// <returns></returns>
public static DataTable GetPagedTable(DataTable dt, int pageIndex, int pageSize)
{
DataTable newdt = dt.Clone();
int rowbegin = 0;
int rowend = 0;
if (pageIndex <= 0)
{
rowbegin = 0;
rowend = (pageIndex + 1) * pageSize;
}
else
{
rowbegin = (pageIndex - 1) * pageSize;
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 dr = dt.Rows[i];
newdt.ImportRow(dr);
}
return newdt;
}

string DumpHrefs(String inputString)
{
Regex r;
Match m;
string ret = string.Empty;
r = new Regex("href\\s*=\\s*(?:\"(?<1>[^\"]*)\"|(?<1>\\S+))'>",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
for (m = r.Match(inputString); m.Success; m = m.NextMatch())
{
ret= m.Groups[1].ToString();
}
return ret;
}