Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Gridview Error

Posted on 2012-03-21
3
Medium Priority
?
290 Views
Last Modified: 2012-03-21
I have a gridview and am having some trouble referencing the ZipCode field.  

Code Behind
 Protected Sub btnAddSelectedCoverage_Click(sender As Object, e As EventArgs) Handles btnAddSelectedCoverage.Click
        Dim cnn As New System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("myprovalConnectionString").ConnectionString)
        Try
            For Each gvRow As GridViewRow In gdvZipList.Rows
                Dim chkBox As CheckBox = CType(gvRow.FindControl("RowLevelCheckBox"), CheckBox)
                Dim zip As TextBox = CType(gvRow.FindControl("ZipCode"), TextBox)
                If chkBox.Checked Then
                    Dim cmd As New System.Data.SqlClient.SqlCommand
                    cmd.Connection = cnn
                    cmd.CommandType = Data.CommandType.StoredProcedure
                    cmd.CommandText = "dbo.VendorCoverageInsert"

                    cmd.Parameters.Add("@VendorId", Data.SqlDbType.VarChar).Value = Session("VendorId").ToString
                    cmd.Parameters.Add("@UserId", Data.SqlDbType.VarChar).Value = Session("VendorId").ToString
                    cmd.Parameters.Add("@Selected", Data.SqlDbType.Bit).Value = chkBox.Checked
                    cmd.Parameters.Add("@Coverage", Data.SqlDbType.Char).Value = zip.ToString

                    cnn.Open()
                    cmd.ExecuteScalar()
                    cnn.Close()
                End If
            Next
            Dim dt As New System.Data.DataTable
            Dim sRedirect As String = "VendorAddEditCoverage.aspx?VID=" + Session("VendorId").ToString
            Response.Redirect(sRedirect)
        Finally
            cnn.Close()
        End Try
    End Sub

Open in new window


Gridview
<asp:GridView ID="gdvZipList" runat="server" AutoGenerateColumns="False" 
                            CssClass="mGrid" Width="257px">
                            <Columns>
                                <asp:TemplateField HeaderText="Select">
                               
            <EditItemTemplate>
                                        <asp:CheckBox ID="RowLevelCheckBox" runat="server" Checked='<%# Bind("ZipCode") %>' />
                                    </EditItemTemplate>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="RowLevelCheckBox" runat="server" Checked='<%# Bind("ZipCode") %>' 
                                            Enabled="true" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField DataField="ZipCode" HeaderText="Zip Code" />
                            </Columns>
                             
                        </asp:GridView>

Open in new window

0
Comment
Question by:rcowen00
[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
  • 2
3 Comments
 
LVL 38

Expert Comment

by:Tom Beck
ID: 37750372
If zip is a textbox, then its value would be zip.Text rather than zip.ToString.
0
 

Author Comment

by:rcowen00
ID: 37750385
I switched it to .text and still getting the Object reference not set to an instance of an object. error.
0
 
LVL 38

Accepted Solution

by:
Tom Beck earned 2000 total points
ID: 37750443
Oh, I see now the ZipCode field is a bound field. In that case you don't want to cast it as a textbox. You can access its value directly if you know the row and column. The row is whatever row the loop is currently on so...

cmd.Parameters.Add("@Coverage", Data.SqlDbType.Char).Value = gvRow.Cells(2).Text

...where 2 is the column number (zero index).
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Creating an analog clock UserControl seems fairly straight forward.  It is, after all, essentially just a circle with several lines in it!  Two common approaches for rendering an analog clock typically involve either manually calculating points with…
User art_snob (http://www.experts-exchange.com/M_6114203.html) encountered strange behavior of Android Web browser on his Mobile Web site. It took a while to find the true cause. It happens so, that the Android Web browser (at least up to OS ver. 2.…
This tutorial will teach you the special effect of super speed similar to the fictional character Wally West aka "The Flash" After Shake : http://www.videocopilot.net/presets/after_shake/ All lightning effects with instructions : http://www.mediaf…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

688 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