Solved

Gridview Footer Sum Doubles on UPDATE only.

Posted on 2015-01-29
4
358 Views
Last Modified: 2015-01-30
Hi Experts,

I'm at a lose on how to fix this problem.

I have a gridview that uses the RowDataBound to display the sum of the totals for each record in my grid.

Protected Sub GridServices_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridServices.RowDataBound

        If e.Row.RowType = DataControlRowType.DataRow Then
            _EstCostTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "EstimatedCost"))
            _ActCostTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "ActualCost"))
            _ProposedTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "Proposed"))
            _AdjustedTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "Adjusted"))
            _CRDBTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "CreditDebit"))
        End If

        If Convert.ToInt32(Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "CreditDebit"))) < 0 Then
            e.Row.Cells(6).ForeColor = Drawing.Color.Red
        End If

        If e.Row.RowType = DataControlRowType.Footer Then
            ' Cell 0
            e.Row.Cells(1).Text = "Totals:"
            e.Row.Cells(1).HorizontalAlign = HorizontalAlign.Right

            ' Cell 1 - Estimated Total
            e.Row.Cells(2).Text = _EstCostTotal.ToString("c")
            e.Row.Cells(2).HorizontalAlign = HorizontalAlign.Right
            ' e.Row.Cells(2).CssClass = "pGrandTotal"

            ' Cell 2 - Actual Total
            e.Row.Cells(3).Text = _ActCostTotal.ToString("c")
            e.Row.Cells(3).HorizontalAlign = HorizontalAlign.Right
            ' e.Row.Cells(3).CssClass = "pGrandTotal"

            ' Cell 3 - Proposed Total
            e.Row.Cells(4).Text = _ProposedTotal.ToString("c")
            e.Row.Cells(4).HorizontalAlign = HorizontalAlign.Right
            e.Row.Cells(4).ForeColor = Drawing.Color.DarkGreen
            ' e.Row.Cells(4).CssClass = "pGrandTotal"

            ' Cell 4 - Adjusted Total
            e.Row.Cells(5).Text = _AdjustedTotal.ToString("c")
            e.Row.Cells(5).HorizontalAlign = HorizontalAlign.Right
            e.Row.Cells(5).ForeColor = Drawing.Color.DarkGreen
            ' e.Row.Cells(5).CssClass = "pGrandTotal"

            ' Cell 4 - Credit Debit
            e.Row.Cells(6).Text = _CRDBTotal.ToString("c")
            e.Row.Cells(6).HorizontalAlign = HorizontalAlign.Right
            ' e.Row.Cells(6).CssClass = "pGrandTotal"

            If Convert.ToInt32(_CRDBTotal) < 0 Then
                e.Row.Cells(6).ForeColor = Drawing.Color.Red
            End If

        End If

    End Sub

Open in new window


When every I perform an either INSERT, DELETE or UPDATE the following subroutine is called:

Public Sub LoadGrid(ByVal worksheetID As Integer)

        Dim dt As DataTable = worksheetServicesLogic.GetServicesForWorksheet(worksheetID)

        If dt.Rows.Count > 0 Then

            ' Bind the main grid
            GridServices.DataSource = dt
            GridServices.DataBind()

        End If

    End Sub

Open in new window


When I INSERT a record, the summary is correct.
add.png
When I DELETE a record, the summary is correct.
delete.png
HOWEVER, when I UPDATE a record, the summary DOUBLES all the values???
update.png
Any idea as to what could be going on and more importantly, how can I fix it?
0
Comment
Question by:cdemott33
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
4 Comments
 
LVL 22

Accepted Solution

by:
Mrunal earned 500 total points
ID: 40579334
Hi,
Add debug point and check if your code for calculating and assigning column total is getting executed twice or not.

If it is executing only once then before binding grid again just clear it first and then bind again with updated records.
For clearing you can use below code:

GridServices.DataSource = null;
GridServices.Rows.Clear();
GridServices.DataBind();

Hope this solves your issue.
0
 

Author Comment

by:cdemott33
ID: 40580250
Hi Mrunal - Thank you for your suggestion.  I followed your advice and here's what I've found.

Clicking UPDATE caused the RowDataBound event to executing TWICE for some reason?  Any idea as to why that would happen?
0
 

Author Comment

by:cdemott33
ID: 40580283
FYI:  This is my GridView... Just in case you what to have a look.

<asp:GridView ID="GridServices" runat="server" CssClass="mGrid" 
                                    AutoGenerateColumns="False" ShowFooter="True">
                                    <Columns>
                                        <asp:TemplateField HeaderText="Service">
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" OnCommand="OpenModal" CommandArgument='<%# Eval("ServiceID") %>'><%# Eval("ServiceType") %></asp:LinkButton>
                                            </ItemTemplate>                                    
                                            <HeaderStyle HorizontalAlign="Left" />
                                        </asp:TemplateField>
                                        <asp:TemplateField HeaderText="Options">
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="false" OnCommand="DeleteService" CommandArgument='<%# Eval("ServiceID") %>' OnClientClick='return confirm("Are you sure you want to delete this service?");'>Delete</asp:LinkButton>
                                            </ItemTemplate>                                    
                                            <HeaderStyle HorizontalAlign="Left" />
                                        </asp:TemplateField>
                                        <asp:BoundField DataField="EstimatedCost" DataFormatString="{0:c}" 
                                            HeaderText="Estimate" >
                                        <HeaderStyle HorizontalAlign="Left" />
                                        <ItemStyle HorizontalAlign="Right" />
                                        </asp:BoundField>
                                        <asp:BoundField DataField="ActualCost" DataFormatString="{0:c}" 
                                            HeaderText="Actual" >
                                        <HeaderStyle HorizontalAlign="Left" />
                                        <ItemStyle HorizontalAlign="Right" />
                                        </asp:BoundField>
                                        <asp:BoundField DataField="Proposed" DataFormatString="{0:c}" 
                                            HeaderText="Proposed" >
                                        <HeaderStyle HorizontalAlign="Left" />
                                        <ItemStyle HorizontalAlign="Right" ForeColor="#006600" />
                                        </asp:BoundField>
                                        <asp:BoundField DataField="Adjusted" DataFormatString="{0:c}" 
                                            HeaderText="Adjusted" >
                                        <HeaderStyle HorizontalAlign="Left" />
                                        <ItemStyle HorizontalAlign="Right" ForeColor="#006600" />
                                        </asp:BoundField>
                                        <asp:BoundField DataField="CreditDebit" DataFormatString="{0:c}"  
                                            HeaderText="CR/DB" >
                                        <HeaderStyle HorizontalAlign="Right" />
                                        <ItemStyle HorizontalAlign="Right" />
                                        </asp:BoundField>
                                    </Columns>
                                    <FooterStyle CssClass="pGrandTotal" />
                                </asp:GridView>

Open in new window

0
 

Author Closing Comment

by:cdemott33
ID: 40580528
Look like I discovered the problem.  There was an onclick="button_event" attached to the button.   I removed the onclick and ... bam... problem solved.  Thanks for your help.
0

Featured Post

[Webinar] How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them. Thursday, July 13, 2017 10:00 A.M. PDT

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Wouldn’t it be nice if you could test whether an element is contained in an array by using a Contains method just like the one available on List objects? Wouldn’t it be good if you could write code like this? (CODE) In .NET 3.5, this is possible…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question