小编i D*_*now的帖子

在这里,我想找到两个数据表中的匹配记录.代码是

public DataTable textfiltering(DataTable dtfff, DataTable dtff)
{
   DataTable ds = (DataTable)Session["maintxt"];
   DataTable dts = (DataTable)Session["sectxt"];
   dtfff = ds;
   dtff = dts;     

   DataTable dtMerged = (from a in dtfff.AsEnumerable()
                          join b in dtff.AsEnumerable()
                          on a["contacts"].ToString() equals b["contacts"].ToString()
                          into g                                 
                          where g.Count()>0                             
                          select a).CopyToDataTable();
           return dtMerged;    

}

当数据表不包含匹配记录时,它给出"源不包含数据行"...如何纠正它...请给出你的建议