搜索嵌套的Gridview ASP.net

Question

我需要在搜索中添加我的GridView。我有一個可摺疊的網格視圖。所以出於搜索的目的，是否有辦法在摺疊的gridview中搜索某些內容，並返回摺疊的結果，然後展開該項目以查看搜索的內容。

我做了一個摺疊教科書gridview與成千上萬的記錄。分頁設置，我有大約55頁的摺疊形式的記錄。

所以，如果有對書名「大學會計」的搜索將顯示收縮形式，然後以查看哪些搜索到的用戶可以只展開退回「大學會計學」的每個項目。

這可能嗎？

Answer 1

下面是一些讓你開始的代碼。但我不知道循環所有的gridcolumns和cell是否是一種有效的方式來搜索數據...

在這個例子中，代碼將停止在網格中找到的第一個searchterm上尋找更多結果。如果你想最後一次你應該從循環中刪除if (searchTermFound == false)。 如果您想要多個匹配的結果，您應該將找到的列和單元格存儲在列表或數組中。 使用找到的rowIndexParent和rowIndexChild值，您可以在需要的行上展開網格。

private void searchGridView(string searchTerm) 
    { 
     int rowIndexParent = -1; 
     int cellIndexParent = -1; 
     int rowIndexChild = -1; 
     int cellIndexChild = -1; 
     bool searchTermFound = false; 

     //loop all rows in parent grid 
     for (int i = 0; i < GridView1.Rows.Count; i++) 
     { 
      //remove this if you want the last match displayed as found, not the first 
      if (searchTermFound == false) 
      { 
       //loop all cells in parent grid 
       for (int j = 0; j < GridView1.Columns.Count; j++) 
       { 
        string cellContent = GridView1.Rows[i].Cells[j].Text; 
        if (cellContent.ToLower().Contains(searchTerm.ToLower())) 
        { 
         rowIndexParent = i; 
         cellIndexParent = j; 
         searchTermFound = true; 
         break; 
        } 
       } 

       //find the nested grid and cast it 
       GridView gv = GridView1.Rows[i].FindControl("GridView2") as GridView; 

       //loop all rows in child grid 
       for (int ii = 0; ii < gv.Rows.Count; ii++) 
       { 
        //loop all cells in child grid 
        for (int jj = 0; jj < gv.Columns.Count; jj++) 
        { 
         string cellContent = gv.Rows[ii].Cells[jj].Text; 

         if (cellContent.ToLower().Contains(searchTerm.ToLower())) 
         { 
          rowIndexParent = i; 

          rowIndexChild = ii; 
          cellIndexChild = jj; 
          searchTermFound = true; 
          break; 
         } 
        } 
       } 
      } 
     } 

     //cellIndexParent > -1 means searchTerm is found in parent grid, not child 
     if (searchTermFound == true && cellIndexParent > -1) 
     { 
      Response.Write("Searchterm \"" + searchTerm + "\" found in parent grid: row " + rowIndexParent + ", column " + cellIndexParent + "."); 
     } 
     else if (searchTermFound == true) 
     { 
      Response.Write("Searchterm \"" + searchTerm + "\" found in child grid: row " + rowIndexChild + ", column " + cellIndexChild + ", parent row " + rowIndexParent + "."); 
     } 
     else 
     { 
      Response.Write("Searchterm \"" + searchTerm + "\" not found."); 
     } 
    } 

注意，這僅與綁定列列，而不是模板列和自動生成列的作品。見下文。

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowDataBound="GridView1_RowDataBound"> 
     <Columns> 
      <!-- search terms in these columns can be found --> 
      <asp:BoundField DataField="field01" HeaderText="Column A" /> 
      <asp:BoundField DataField="field02" HeaderText="Column B" /> 

      <asp:TemplateField> 
       <ItemTemplate> 
        <!-- search terms in this column cannot be found --> 
        <%# DataBinder.Eval(Container.DataItem, "field05").ToString() %> 
       </ItemTemplate> 
      </asp:TemplateField> 

      <asp:TemplateField> 
       <ItemTemplate> 
        <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="false"> 
         <Columns> 
          <!-- search terms in these columns can be found --> 
          <asp:BoundField DataField="field03" HeaderText="Column C" /> 
          <asp:BoundField DataField="field04" HeaderText="Column D" /> 
         </Columns> 
        </asp:GridView> 
       </ItemTemplate> 
      </asp:TemplateField> 
     </Columns> 
    </asp:GridView>