Asp.net 代码隐藏正在向应用程序传递错误的值_Asp.net_Gridview

Asp.net 代码隐藏正在向应用程序传递错误的值

asp.net gridview

Asp.net 代码隐藏正在向应用程序传递错误的值,asp.net,gridview,Asp.net,Gridview,我试图根据列的值在gridview中显示特定的超链接 <%If existsOtherParcel = "Y" Then%> Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br /> <asp:HyperLink ID="OtherParcelHyperLink" run

我试图根据列的值在gridview中显示特定的超链接

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>

这是我的GridView:

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>

代码隐藏：

Protected Sub TaxSaleGridView_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles TaxSaleGridView.RowDataBound

    If e.Row.RowType = DataControlRowType.DataRow Then
        OPval = DirectCast(e.Row.DataItem, Data.DataRowView)("OtherParcel").ToString()


       Select Case OPval

            Case Is <> Nothing
                existsOtherParcel = "Y"
                e.Row.Cells(3).BackColor = System.Drawing.Color.Yellow

            Case Is = Nothing
                existsOtherParcel = "N"
                e.Row.Cells(3).BackColor = System.Drawing.Color.YellowGreen
                e.Row.Cells(3).Text = TaxSaleGridView.Rows.Count

        End Select

    End If

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>

Protected Sub-TaxSaleGridView_RowDataBound（发送方作为对象，e作为System.Web.UI.WebControls.GridViewRowEventArgs）处理TaxSaleGridView.RowDataBound
如果e.Row.RowType=DataControlRowType.DataRow，则
OPval=DirectCast（例如Row.DataItem、Data.DataRowView）（“其他包裹”）.ToString（）
选择Case OPval
这个案子不算什么
existsOtherParcel=“Y”
e、 行.单元格（3）.背景色=System.Drawing.Color.Yellow
情况就是一切
existsOtherParcel=“N”
e、 行.单元格（3）.背景色=System.Drawing.Color.YellowGreen
e、 Row.Cells（3）.Text=TaxSaleGridView.Rows.Count
结束选择
如果结束

端接头

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>

我的HTML:

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>


还有其他包裹吗







还有其他包裹吗

只有3次出现

OtherParcel

列将有一个值。。。其余的都是空白。我的目标是让

参考资料

列中的

位置图

超链接指向

其他包裹

值（如果存在），或者如果不存在，则指向销售ID。但是，所有链接都指向销售ID，即使给定行中存在OtherParcel值

正如您在gridview中看到的，“OtherParcel”列中的单元格正在按预期更改颜色

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>

我可能做错了什么

您不妨在代码隐藏中完成这一切：

             <%If existsOtherParcel = "Y" Then%>
                Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="OtherParcelHyperLink" runat="server"                     

                    NavigateUrl='<%# Eval("OtherParcel", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br />

                <asp:Label ID="notOnSale" runat="server" Text="Land is not on sale." Font-Bold="True"></asp:Label><br /><br />

             <%ElseIf existsOtherParcel = "N" Then%>
               Other Parcel Exists? <%Response.Write(existsOtherParcel)%><br /><br />
                <asp:HyperLink ID="LocationMapHyperLink" runat="server" 

                    NavigateUrl='<%# Eval("Property_ID", "http://URL/index.html?parcel={0}") %>' 
                    Text="Location Map" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">

                </asp:HyperLink><br /><br />

              <%End If%>




                <asp:HyperLink ID="PRCHyperLink" runat="server" 
                    NavigateUrl='<%# Eval("UnformattedParcelNumber", "http://URL/default.asp?sparcelno={0}&stemp=&dSearch=houseno&dreport=propcard&report=&dReportName=Property Card") %>' 
                    Text="Property Record Card" Target="_blank" onclick="javascript:window.open(this.href, '','toolbar=yes,location=no,directories=no,status=no,menubar=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width=780,height=550,left=20,top=20');">
                </asp:HyperLink>

            </ItemTemplate>                


        </asp:TemplateField>

Select Case OPval

Case Is <> Nothing
    existsOtherParcel = "Y"
    e.Row.Cells(3).BackColor = System.Drawing.Color.Yellow
    OtherParcelHyperLink.NavigateUrl = String.Format("http://URL/index.html?parcel={0}", OtherParcel)

Case Is = Nothing
    existsOtherParcel = "N"
    e.Row.Cells(3).BackColor = System.Drawing.Color.YellowGreen
    e.Row.Cells(3).Text = TaxSaleGridView.Rows.Count
    LocationMapHyperLink.NavigateUrl = String.Format("http://URL/index.html?parcel={0}", Property_ID)

End Select

选择Case OPval
这个案子不算什么
existsOtherParcel=“Y”
e、 行.单元格（3）.背景色=System.Drawing.Color.Yellow
OtherParcelHyperLink.NavigateUrl=String.Format（“http://URL/index.html?parcel={0}”，其他包裹）
情况就是一切
existsOtherParcel=“N”
e、 行.单元格（3）.背景色=System.Drawing.Color.YellowGreen
e、 Row.Cells（3）.Text=TaxSaleGridView.Rows.Count
LocationMapHyperLink.NavigateUrl=String.Format（“http://URL/index.html?parcel={0}，属性（ID）
结束选择

不是一个完整的答案，而是一些需要检查的东西。首先，在我看来opval将永远是空的，因为它被转换为一个字符串，因此存在，所以这个包将永远是“Y”。然而，我认为当事件被捕获时，行已经被渲染，因此对您的现有包执行操作已经很晚了。我认为您需要将URL更改应用到已经渲染的行，就像您对颜色所做的一样。因此，您是说我应该在代码中将[NavigateUrl]值设置为“OtherParcel”或“Property_ID”？是的。不过请更改您的案例-您应该与空字符串进行比较，而不是什么都不比较。我在第一个案例中添加了“OtherParcelHyperLink.NavigateUrl”部分，但出现以下错误：“OtherParcelHyperLink未声明。由于其保护级别，它可能无法访问。”好的，Intellisense正在识别“OtherParcelHyperLink”现在。。。但是当我运行它时，我得到了这个错误：“对象引用未设置为对象的实例。”@jschmidt奇怪，它不应该为null