無需打印使用C＃打印重複值

Question

這是我打印「m_USTByDoctor_OPDC.ml_trn_bill_item」的值來自數據庫的代碼。

for (int i = 0; i < m_USTByDoctor_OPDC.ml_trn_bill_item.Count;i++) 
    { 

    int count = 0; 
    for (int j = 0; j m_USTByDoctor_OPDC.ml_trn_bill_item.Count; j++) 
       { 
if(m_USTByDoctor_OPDC.ml_trn_bill_item[j].ItemName==m_USTByDoctor_OPDC.ml_trn_bill_item[i].ItemName) 
        { 
         count++; 
        } 
       } 

       Add_Cell(m_USTByDoctor_OPDC.ml_trn_bill_item[i].ItemName, ref tbl_summaryContent3, HELVETICA_BOLD_8_BLACK, false, Rectangle.ALIGN_LEFT, Rectangle.ALIGN_MIDDLE); 
       Add_Cell(count.ToString(), ref tbl_summaryContent3, HELVETICA_NORMAL_8_BLACK, false, Rectangle.ALIGN_LEFT, Rectangle.ALIGN_MIDDLE); 
      } 

這是外出放我正在歌廳，你有Repated值還我需要消除它，我怎麼能做到這一點

Abdomen & Pelvic Scan IP 3 
    Abdomen & Pelvic Scan IP 3 
    Abdomine Pelvic Scan - OP 5 
    Abdomine Pelvic Scan - OP 5 
    Anamoly Scan (Single) - OP 1 
    Abdomine Pelvic Scan - OP 5 
    Abdomine Pelvic Scan - OP 5 
    Abdomine Pelvic Scan - OP 5 
    ANC/Obstetrics Scan(OP) 1 
    Abdomen & Pelvic Scan IP 3 

Answer 1

可以使用GroupBy LINQ擴展方法：

foreach (var group in m_USTByDoctor_OPDC.ml_trn_bill_item.GroupBy(i => i.ItemName)) 
{ 
    Add_Cell(group.Key, ref tbl_summaryContent3, HELVETICA_BOLD_8_BLACK, false, Rectangle.ALIGN_LEFT, Rectangle.ALIGN_MIDDLE); 
    Add_Cell(group.Count().ToString(), ref tbl_summaryContent3, HELVETICA_NORMAL_8_BLACK, false, Rectangle.ALIGN_LEFT, Rectangle.ALIGN_MIDDLE); 
}