SCOPE_IDENTITY返回错误ID

我试图返回新创建的行的ID。我试着用SCOPE_IDENTITY做它，但它返回一个3.我搜索了四周，无法确定我做的不正确。SCOPE_IDENTITY返回错误ID

下面是代码：

<asp:SqlDataSource ID="sourceRecruit" runat="server" 
    ProviderName="System.Data.SqlClient" 
    ConnectionString="<%$ ConnectionStrings:DBCS %>" 
    SelectCommand="SELECT * FROM [Players] WHERE ([ID] = @ID)" 
    UpdateCommand="UPDATE [Players] SET [FirstName] = @FirstName, [LastName][email protected], [Height][email protected], [Weight][email protected], [FortyYardDash] = @FortyYardDash, [CombineVerified] = @CombineVerified, [HomeNumber] = @HomeNumber, [CellNumber] = @CellNumber, [Email] = @Email, [Position] = @Position, [Commitment] = @Commitment, [GraduationYear] = @GraduationYear, [LastUpdate] = @LastUpdate, [NetworkUpdate] = @NetworkUpdate, [DecisionDate] = @DecisionDate, [MiscContact] = @MiscContact, [RivalsID] = @RivalsID, [ScoutID] = @ScoutID, [ESPNID] = @ESPNID, [t247SportsID] = @t247SportsID, [PictureID] = @PictureID, [StarRating] = @StarRating, [NationalHot100Rank] = @NationalHot100Rank, [PositionRank] = @PositionRank, [JanuaryEnrollee] = @JanuaryEnrollee, [Recruiter] = @Recruiter, [RecruitedPosition] = @RecruitedPosition, [SummerCamp] = @SummerCamp, [JuniorDay] = @JuniorDay, [SpringGame] = @SpringGame, [UnofficialVisit] = @UnofficialVisit, [FootballGame] = @FootballGame, [OfficialVisitDate] = @OfficialVisitDate, [Status] = @Status, [Updates] = @Updates, [Favorites] = @Favorites, [Visits] = @Visits, [Odds] = @Odds WHERE [ID] = @ID" 
    InsertCommand="INSERT INTO Players ([FirstName], [LastName], [Height], [Weight], [FortyYardDash], [CombineVerified], [HomeNumber], [CellNumber], [Email], [Position], [Commitment], [GraduationYear], [LastUpdate], [NetworkUpdate], [DecisionDate], [MiscContact], [RivalsID], [ScoutID], [ESPNID], [t247SportsID], [PictureID], [StarRating], [NationalHot100Rank], [PositionRank], [JanuaryEnrollee], [Recruiter], [RecruitedPosition], [SummerCamp], [JuniorDay], [SpringGame], [UnofficialVisit], [FootballGame], [OfficialVisitDate], [Status], [Updates], [Favorites], [Visits], [Odds]) VALUES (@FirstName, @LastName, @Height, @Weight, @FortyYardDash, @CombineVerified, @HomeNumber, @CellNumber, @Email, @Position, @Commitment, @GraduationYear, @LastUpdate, @NetworkUpdate, @DecisionDate, @MiscContact, @RivalsID, @ScoutID, @ESPNID, @t247SportsID, @PictureID, @StarRating, @NationalHot100Rank, @PositionRank, @JanuaryEnrollee, @Recruiter, @RecruitedPosition, @SummerCamp, @JuniorDay, @SpringGame, @UnofficialVisit, @FootballGame, @OfficialVisitDate, @Status, @Updates, @Favorites, @Visits, @Odds); SET @ID=SCOPE_IDENTITY()" 
    OnInserted="reloadPage"> 

    <SelectParameters> 
     <asp:QueryStringParameter QueryStringField="ID" Name="ID" Type="Int32" /> 
    </SelectParameters> 
    <UpdateParameters> 
     <asp:Parameter Name="DecisionDate" ConvertEmptyStringToNull="true" /> 
     <asp:Parameter Name="NetworkUpdate" ConvertEmptyStringToNull="true" /> 
     <asp:Parameter Name="OfficialVisitDate" ConvertEmptyStringToNull="true" /> 
     <asp:Parameter Name="LastUpdate" ConvertEmptyStringToNull="true" /> 
    </UpdateParameters> 
    <InsertParameters> 
     <asp:Parameter Name="ID" DefaultValue="Int32" Direction="Output" /> 
     <asp:Parameter Name="DecisionDate" ConvertEmptyStringToNull="true" /> 
     <asp:Parameter Name="NetworkUpdate" ConvertEmptyStringToNull="true" /> 
     <asp:Parameter Name="OfficialVisitDate" ConvertEmptyStringToNull="true" /> 
     <asp:Parameter Name="LastUpdate" ConvertEmptyStringToNull="true" /> 
    </InsertParameters> 
    </asp:SqlDataSource>

这里是我的代码背后：

protected void reloadPage(object sender, SqlDataSourceStatusEventArgs e) 
{ 

    object newid = e.Command.Parameters["@ID"].Value; 
    lblResults.Text = "Test "+Convert.ToString(newid); 
}

就像我提到的，每次我跑的代码时，lblResults显示“3， “但ID在3000范围内。

来源

2011-10-12 cunjiva

存储过程有输出参数，显示什么是批处理。我很惊讶这返回任何@ID的东西。也许它是从QueryString获取该值？尝试将您的INSERT批次更改为相应的存储过程。 – MatthewMartin

您确定标签没有被截断，只显示最左边的字符？如果查看源代码会怎么样？它绝对是3在HTML中？ –

您需要使用OnInserted事件，并指定参数的输出方向：

<asp:Parameter Direction="Output" Name="ID" Type="Int32" />

代码隐藏：

protected void SqlDataSource1_Inserted(object sender, SqlDataSourceStatusEventArgs e) 
{ 
    int id = Convert.ToInt32(e.Command.Parameter["@ID"].Value); 
}

我还注意到，您设置DefaultValue="Int32"。您应该将其更改为Type="Int32"。

如果您仍然有应用上述更改后的问题，请尝试更改SET @ID = SCOPE_IDENTITY到SELECT @ID = SCOPE_IDENTITY。不应该有所作为，但如果一切都失败了......

来源

2011-10-12 16:03:31

他是用'方向=“输出”'有人试图通过消除这种信息的重要作品“收拾”他的问题。 –

@AbeMiessler：我注意到了，但是谢谢你指出。我只是想我会发布*完整*答案:) –

它的工作！是什么，我改变了'DefaultValue =“Int32”'为'类型=“Int32”'和工作。谢谢！这让我坚持了整整一个早晨。 – cunjiva

你尝试

SELECT @ID = SCOPE_IDENTITY()

，而不是

SET @ID = SCOPE_IDENTITY()

那是我和完美的作品。

来源

2011-10-12 15:58:35 fahad

不应该有任何区别。两者都是分配给变量/参数的有效方式。 –

我只是做了你建议的变化，但它仍然会返回一个“3” – cunjiva

SCOPE_IDENTITY返回错误ID

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