Question

我想从sql server中将 10 last rows 插入我的gridview并在我的页面中显示它们。这是我的问题：

SELECT Cause.Cause_name
       ,City.City_name
       ,InjuryScenario.InjuryScenario_id
       ,InjuryScenario.InjuryScenario_name
       ,InjuryScenario.InjuryDay
       ,InjuryScenario.InjuryMonth
       ,InjuryScenario.InjuryYear
       ,Place.Place_name
    FROM InjuryScenario
    INNER JOIN Cause
        ON InjuryScenario.Cause_id = Cause.Cause_id
    INNER JOIN PlaceDet
        ON InjuryScenario.InjuryScenario_id = PlaceDet.InjuryScenario_id
    INNER JOIN City
        ON PlaceDet.City_id = City.City_id
    INNER JOIN Place
        ON InjuryScenario.Place_id = Place.Place_id)

这是我在aspx中的代码：

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="InjuryScenario_id" DataSourceID="SqlDataSource30" ShowHeaderWhenEmpty="True">
     <Columns>
         <asp:BoundField DataField="InjuryScenario_id" HeaderText="InjuryScenario_id" ReadOnly="True" SortExpression="InjuryScenario_id"  />
         <asp:BoundField DataField="InjuryScenario_name" HeaderText="InjuryScenario_name" SortExpression="InjuryScenario_name" />
         <asp:BoundField DataField="Cause_name" HeaderText="Cause_name" SortExpression="Cause_name" />
         <asp:BoundField DataField="City_name" HeaderText="City_name" SortExpression="City_name" />
         <asp:BoundField DataField="Place_name" HeaderText="Place_name" SortExpression="Place_name" />
         <asp:BoundField DataField="InjuryDay" HeaderText="InjuryDay" SortExpression="InjuryDay" Visible="False"/>
         <asp:BoundField DataField="InjuryMonth" HeaderText="InjuryMonth" SortExpression="InjuryMonth" Visible="False"/>
         <asp:BoundField DataField="InjuryYear" HeaderText="InjuryYear" SortExpression="InjuryYear" Visible="False"/>
         <asp:TemplateField HeaderText="Date">
                      <ItemTemplate>
         <asp:Label runat="server"><%#(int)Eval("InjuryDay")+"/"+ Eval("InjuryMonth")+"/"+ Eval("InjuryYear") %></asp:Label>

     </ItemTemplate>

     </asp:TemplateField>

     </Columns>
    </asp:GridView>

这里是插入代码：

DBManager db = new DBManager();
db.Insert("InjuryScenario", "InjuryScenario_id,"+"Cause_id," + "CauseType_id," + 
"CauseChar_id," + "Place_id," + "PlaceType_id," + "InjuryYear," + "InjuryMonth," + 
"InjuryDay," + "InjuryDate_id," + "InjuryInSchool," + "InjuryDesc," + "AlmostInjury," 
+ "InjuryComments," + "ProductInjury","'"+ num_id + "'" + Cause_nameDD.SelectedValue + 
"','" + CauseTypeDD.DataValueField + "','" + CauseCharDD.SelectedValue + "','" + 
PlaceDD.SelectedValue + "','" + PlaceTypeDD.SelectedValue + "','" + 
YearDD.SelectedValue + "','" + MonthDD.SelectedValue + "','" + DayDD.SelectedValue + 
"','" + InjuryDateDD.SelectedValue + "','" + InjuryInSchoolCBL.SelectedValue + "','" + 
InjuryDescTB.Text + "','" + AlmostInjuryTB.Text + "','" + InjuryCommentTB.Text + "','" 
+ ProductInjuryCBL.Text + "'");

Answer 1

我们需要查看insert语句，并知道如何唯一地识别每个案例以提供帮助。我通常做这样的事情，每个新案例都有一个唯一的ID作为自动增量。此ID用于在所有表中引用参照完整性。

然后为了退出最后十个案例，我只想创建一个像

这样的语句

选择...... 从... ID IN（从CASE_IDS中选择CASE_IDS.ID ORDER BY CASE_IDS.ID DESC WHERE ROWNUM＆lt; 11 ）

希望这有帮助。

如何在gridview中插入10个最后一行

1 个答案: