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POIndexOutOfRangeException. There is no row at position 0
 

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  1. POIndexOutOfRangeException. There is no row at position 0
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    <p>Trying to update data in a GridView and received an exception error. Originally, I had <strong>GridView1.EditIndex = -1</strong>, then I read up that the index number should not be a negative so I changed it to <strong>=1</strong> but still it didn't work.</p> <pre><code>Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim dt As New DataTable("historyList") dt.Columns.Add("TicketID", GetType(Integer)) dt.Columns.Add("DateCreated", GetType(DateTime)) dt.Columns.Add("FullName", GetType(String)) dt.Columns.Add("TicketType", GetType(String)) dt.Columns.Add("Subject", GetType(String)) dt.Columns.Add("Message", GetType(String)) dt.Columns.Add("Status", GetType(String)) For i = 0 To 6 Dim tableRow = dt.NewRow() tableRow("TicketID") = i tableRow("DateCreated") = Now() tableRow("FullName") = i.ToString() tableRow("TicketType") = i.ToString() tableRow("Subject") = i.ToString() tableRow("Message") = i.ToString() tableRow("Status") = i.ToString() Next Session("dt") = dt BindData() End Sub Protected Sub GridView1_RowEditing(ByVal sender As Object, ByVal e As GridViewEditEventArgs) GridView1.EditIndex = e.NewEditIndex BindData() End Sub Protected Sub GridView1_RowCancelingEdit(ByVal sender As Object, ByVal e As GridViewCancelEditEventArgs) GridView1.EditIndex = 1 BindData() End Sub Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs) Dim dt = CType(Session("dt"), DataTable) 'if your current DataSource be in Session Dim row As GridViewRow = GridView1.Rows(e.RowIndex) dt.Rows(row.DataItemIndex)("TicketID") = (CType(row.Cells(0).Controls(0), TextBox)).Text dt.Rows(row.DataItemIndex)("DateCreated") = (CType(row.Cells(1).Controls(0), TextBox)).Text dt.Rows(row.DataItemIndex)("FullName") = (CType(row.Cells(2).Controls(0), TextBox)).Text dt.Rows(row.DataItemIndex)("TicketType") = (CType(row.Cells(3).Controls(0), TextBox)).Text dt.Rows(row.DataItemIndex)("Subject") = (CType(row.Cells(4).Controls(0), TextBox)).Text dt.Rows(row.DataItemIndex)("Message") = (CType(row.Cells(5).Controls(0), TextBox)).Text dt.Rows(row.DataItemIndex)("Status") = (CType(row.Cells(6).Controls(0), TextBox)).Text Session("dt") = dt GridView1.EditIndex = 1 BindData() End Sub Private Sub BindData() GridView1.DataBind() End Sub </code></pre> <p>So, here's my aspx codes:</p> <pre><code> &lt;asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="TicketID" DataSourceID="historySqlDataSource" ForeColor="#333333" GridLines="None" Width="828px" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowUpdating="GridView1_RowUpdating"&gt; &lt;AlternatingRowStyle BackColor="White" ForeColor="#284775" /&gt; &lt;Columns&gt; &lt;asp:CommandField ShowEditButton="True" /&gt; &lt;asp:BoundField DataField="TicketID" HeaderText="TicketID" InsertVisible="False" ReadOnly="True" SortExpression="TicketID" /&gt; &lt;asp:BoundField DataField="DateCreated" HeaderText="DateCreated" SortExpression="DateCreated" /&gt; &lt;asp:BoundField DataField="FullName" HeaderText="FullName" SortExpression="FullName" /&gt; &lt;asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" /&gt; &lt;asp:BoundField DataField="TicketType" HeaderText="TicketType" SortExpression="TicketType" /&gt; &lt;asp:BoundField DataField="Subject" HeaderText="Subject" SortExpression="Subject" /&gt; &lt;asp:BoundField DataField="Message" HeaderText="Message" SortExpression="Message" /&gt; &lt;asp:BoundField DataField="Status" HeaderText="Status" SortExpression="Status" /&gt; &lt;/Columns&gt; &lt;EditRowStyle BackColor="#999999" /&gt; &lt;FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /&gt; &lt;HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /&gt; &lt;PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" /&gt; &lt;RowStyle BackColor="#F7F6F3" ForeColor="#333333" /&gt; &lt;SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /&gt; &lt;SortedAscendingCellStyle BackColor="#E9E7E2" /&gt; &lt;SortedAscendingHeaderStyle BackColor="#506C8C" /&gt; &lt;SortedDescendingCellStyle BackColor="#FFFDF8" /&gt; &lt;SortedDescendingHeaderStyle BackColor="#6F8DAE" /&gt; &lt;/asp:GridView&gt; </code></pre>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
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    1. USEsther
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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    2. PO
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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