每当用户点击“添加行”按钮时，我都会尝试向网格视图添加新的空白行。理想情况下，无论他们单击此按钮哪一行，都会在该行下方插入一个新行。 我已经阅读了很多以前的问题，但我仍然无法让我的gridview显示一个新的空白行。
网页代码：
<table>
...
...
<td colspan="3" align="left" style="border: thin solid #000000; vertical-align: top; background-color: #4B6C9E">
<asp:UpdatePanel ID="UpdatePanel1" runat="server" >
<ContentTemplate>
<asp:GridView ID="grdHours" runat="server" AutoGenerateColumns="False" Width="100%" CellPadding="4"
ForeColor="#333333" GridLines="None" >
<AlternatingRowStyle BackColor="White" VerticalAlign="Top" Height="20px"/>
<Columns>
<asp:TemplateField ShowHeader="False" HeaderText="Task">
<ItemTemplate>
<asp:Label ID="BufferLabel" runat="server" Text="" Visible="False"></asp:Label>
<asp:TextBox ID="TaskList" runat="server" CssClass="myDropDownSearch" Width="80%"
onfocus="inputFocus(this)" onblur="inputBlur(this)" value="Select a Task..."></asp:TextBox>
<asp:AutoCompleteExtender ServiceMethod="SearchEmployees"
MinimumPrefixLength="3"
CompletionInterval="100" EnableCaching="false" CompletionSetCount="10"
TargetControlID="TaskList"
ID="AutoCompleteExtender3" runat="server" FirstRowSelected = "false">
</asp:AutoCompleteExtender>
</ItemTemplate>
<ItemStyle Width="15%" />
</asp:TemplateField>
<asp:BoundField DataField="Weekday" HeaderText="Weekday" >
<HeaderStyle HorizontalAlign="Left" />
<ItemStyle HorizontalAlign="Left" Width="4%" />
</asp:BoundField>
<asp:BoundField DataField="Date" DataFormatString="{0:d}" HeaderText="Date" >
<HeaderStyle HorizontalAlign="Center" />
<ItemStyle HorizontalAlign="Center" Width="8%" />
</asp:BoundField>
<asp:TemplateField HeaderText="Hours">
<ItemTemplate>
<asp:Label ID="lblHours" Visible='<%# NOT IsInEditMode %>' runat="server" Text='<%# Eval("Hours") %>' CssClass="hoursLabel" />
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("Hours") %>'
Width="90%" Visible='<%# IsInEditMode %>'>
</asp:TextBox>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
<ItemStyle Width="5%" HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Minutes">
<ItemTemplate>
<asp:Label ID="lblMins" Visible='<%# NOT IsInEditMode %>' runat="server" Text='<%# Eval("Minutes") %>' CssClass="hoursLabel" />
<asp:DropDownList ID="DropDownList2" runat="server" CssClass="myDropDown" selectedValue='<%# Eval("Minutes") %>' Visible='<%# IsInEditMode %>' >
<asp:ListItem></asp:ListItem>
<asp:ListItem>0</asp:ListItem>
<asp:ListItem>15</asp:ListItem>
<asp:ListItem>30</asp:ListItem>
<asp:ListItem>45</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
<ItemStyle Width="5%" HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Activity" >
<ItemTemplate>
<asp:Label ID="lblActivity" Visible='<%# NOT IsInEditMode %>' runat="server" Text='<%# Eval("Activity") %>' CssClass="hoursLabel" />
<asp:DropDownList ID="DropDownList1" runat="server" width="75%" selectedValue='<%# Eval("Activity") %>' Visible='<%# IsInEditMode %>'>
<asp:ListItem Selected="True">Select Activity</asp:ListItem>
<asp:ListItem></asp:ListItem>
<asp:ListItem>Prescope</asp:ListItem>
<asp:ListItem>Scope</asp:ListItem>
<asp:ListItem>Design/Build Configuration</asp:ListItem>
<asp:ListItem>Testing</asp:ListItem>
<asp:ListItem>Training</asp:ListItem>
<asp:ListItem>Implementation/Validation</asp:ListItem>
<asp:ListItem>Maintenance & Ongoing Support</asp:ListItem>
<asp:ListItem>Project Management</asp:ListItem>
<asp:ListItem>Shared Time</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="*" visible="false" ControlToValidate="DropDownList1"></asp:RequiredFieldValidator>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" />
<ItemStyle Width="20%" HorizontalAlign="Center" />
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" HeaderText="AddEntries">
<ItemTemplate>
<asp:Button ID="btnHoursRow" runat="server" Text="+" Visible='<%# IsInEditMode %>' OnClick="btnNewEntryRow_Click" />
</ItemTemplate>
<ItemStyle Width="5%" />
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" HeaderText="AddNotes">
<ItemTemplate>
<asp:Label ID="lblNotes" Visible='<%# NOT IsInEditMode %>' runat="server" CssClass="hoursLabel" />
<asp:Button ID="btnAddNotes" runat="server" Text="Add Notes" Visible='<%# IsInEditMode %>' />
<asp:ModalPopupExtender ID="btnAddNotes_ModalPopupExtender" runat="server"
DynamicServicePath="" Enabled="True" PopupControlID="pnlNotes"
TargetControlID="btnAddNotes"
OkControlID="btnNotesDone">
</asp:ModalPopupExtender>
</ItemTemplate>
<ItemStyle Width="5%" />
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" HeaderText="Validator">
<ItemTemplate>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="Whole Numbers Only" ControlToValidate="TextBox1" ValidationGroup="HoursasIntegers"
ValidationExpression="\d+" SetFocusOnError="False" Width="75%" Font-Bold="True" ForeColor="Red" Display="Dynamic"></asp:RegularExpressionValidator>
</ItemTemplate>
<ItemStyle Width="10%" />
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" HeaderText="ErrMessage">
<ItemTemplate>
<asp:Label ID="ActivityErrorMessage" runat="server" Text="You must select an Activity for entered hours." Visible="False" ForeColor="#FF0000" Font-Bold="True"></asp:Label>
</ItemTemplate>
<ItemStyle Width="19%" />
</asp:TemplateField>
<asp:TemplateField HeaderText="TimeNotes">
<ItemTemplate>
<asp:Panel ID="pnlNotes" runat="server" Visible='<%# IsInEditMode %>' Width="75%" BackColor="#4B6C9E" Height="300px">
<table width="100%">
<tr>
<td>
<asp:Label ID="Label1" runat="server" Text="Enter Notes Below:" ForeColor="White" Font-Size="Medium"></asp:Label>
</td>
</tr>
<tr>
<td align="center">
<asp:TextBox ID="txtNotes" runat="server" CssClass="myTextbox"
TextMode="MultiLine" Text='<%# Eval("TimeNotes") %>' Height="200"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnNotesDone" runat="server" Text="Done" />
<asp:Button ID="btnNotesCancel" runat="server" Text="Cancel" OnClick="btnNotesCancel_Click" Visible="False" />
</td>
</tr>
</table>
</asp:Panel>
</ItemTemplate>
<ItemStyle Width="4%" />
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#2461BF" />
<FooterStyle BackColor="White" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#EFF3FB" Height="20px" VerticalAlign="Top" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#F5F7FB" />
<SortedAscendingHeaderStyle BackColor="#6D95E1" />
<SortedDescendingCellStyle BackColor="#E9EBEF" />
<SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>
</ContentTemplate>
</asp:UpdatePanel>
</td>
代码背后：
Protected Sub btnNewEntryRow_Click(ByVal sender As Object, ByVal e As EventArgs)
' Dim clickedRow = TryCast(DirectCast(sender, Button).NamingContainer, GridViewRow)
' Dim clickedIndex = clickedRow.RowIndex
'Just hard coded a value for now
BindGrdHours(3)
End Sub
Private Sub BindGrdHours(ByVal rowIndex As Integer)
Dim rowIndex As Integer = 0
If ViewState("CurrentGridTable") IsNot Nothing Then
Dim dtCurrentTable As DataTable = DirectCast(ViewState("CurrentGridTable"), DataTable)
Dim drCurrentRow As DataRow = Nothing
If dtCurrentTable.Rows.Count > 0 Then
For i As Integer = 1 To dtCurrentTable.Rows.Count
Dim TaskList As TextBox = DirectCast(grdHours.Rows(rowIndex).Cells(1).FindControl("TaskList"), TextBox)
'Dim TextBoxAge As BoundField
'TextBoxAge.DataField = grdHours.Rows(rowcount).Cells(2).FindControl("Weekday").ToString
'Dim TextBoxAddress As BoundField
'TextBoxAddress.DataField = grdHours.Rows(rowcount).Cells(3).FindControl("Date").ToString
Dim Hours As TextBox = DirectCast(grdHours.Rows(rowIndex).Cells(4).FindControl("TextBox1"), TextBox)
Dim Minutes As DropDownList = DirectCast(grdHours.Rows(rowIndex).Cells(5).FindControl("DropDownList2"), DropDownList)
Dim Activity As DropDownList = DirectCast(grdHours.Rows(rowIndex).Cells(6).FindControl("DropDownList1"), DropDownList)
Dim AddEntries As Button = DirectCast(grdHours.Rows(rowIndex).Cells(7).FindControl("btnHoursRow"), Button)
drCurrentRow = dtCurrentTable.NewRow()
' drCurrentRow("RowNumber") = i + 1
dtCurrentTable.Rows(i - 1)("Task") = TaskList.Text.ToString
dtCurrentTable.Rows(i - 1)("Weekday") = grdHours.Rows(rowIndex).Cells(2).Text.ToString
dtCurrentTable.Rows(i - 1)("Date") = grdHours.Rows(rowIndex).Cells(3).Text.ToString
dtCurrentTable.Rows(i - 1)("Hours") = Hours.Text.ToString
dtCurrentTable.Rows(i - 1)("Minutes") = Minutes.SelectedValue.ToString
dtCurrentTable.Rows(i - 1)("Activity") = Activity.SelectedValue.ToString
dtCurrentTable.Rows(i - 1)("AddEntries") = AddEntries.Text.ToString
dtCurrentTable.Rows(i - 1)("AddNotes") = String.Empty
dtCurrentTable.Rows(i - 1)("Validator") = String.Empty
dtCurrentTable.Rows(i - 1)("ErrMessage") = String.Empty
dtCurrentTable.Rows(i - 1)("TimeNotes") = String.Empty
rowIndex += 1
Next
dtCurrentTable.Rows.Add(drCurrentRow)
ViewState("CurrentGridTable") = dtCurrentTable
grdHours.DataSource = dtCurrentTable
grdHours.DataBind()
Dim txn As TextBox = DirectCast(grdHours.Rows(rowIndex).Cells(1).FindControl("TextBox1"), TextBox)
' txn.Focus;
txn.Focus()
End If
End If
enterHours(True)
End Sub
当我单击按钮时，正在调用btnNewEntryRow_Click函数，该函数又成功调用BindGrdHours（），但在完成后，没有任何事情发生。屏幕仍然包含原始gridview。
关于我哪里出错的任何想法？谢谢你的期待。