Subgurim G未显示在网页上

Question

我正在我的网页上使用subgurim，我正在尝试获取填充方向。 我已正确显示标记。 我没有在添加方向的过程中，但我不明白为什么它们没有显示。

以下是网页：

<%@ register assembly="GMaps" namespace="Subgurim.Controles" tagprefix="cc1" %>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<table align="center" width="80%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td align="center" valign="top" width="10%">
<asp:Label ID="lblDirectionsFrom" runat="server" CssClass="Label" Text="Drive From:" Visible="False"></asp:Label>
&nbsp;
<asp:DropDownList ID="ddlDirectionsFrom" runat="server" CssClass="Textbox" Width="100px" AppendDataBoundItems="True" Visible="false" AutoPostBack="True">
</asp:DropDownList>
&nbsp;
</td>
<td align="center" valign="top" width="20%" colspan="3">
<asp:Label ID="lblDirectionsTo" runat="server" CssClass="Label" Text="Drive To:" Visible="False"></asp:Label>
&nbsp;
<asp:DropDownList ID="ddlDirectionsTo" runat="server" CssClass="Textbox" Width="100px" AppendDataBoundItems="True" Visible="false" AutoPostBack="True">
</asp:DropDownList>
</td>
<td align="left" valign="top" colspan="4" width="40%">
<input type="button" id="bt_Go" runat="server" value="Get Directions" onserverclick="GetDirections" class="CmdButton" visible="False" />
</td>
</tr>
<tr>
<td align="right" valign="top" width="10%">
</td>
<td align="left" valign="top" width="20%" colspan="3">
</td>
<td align="left" valign="top" colspan="4" width="40%">
<asp:Label ID="txtMapMsg"
runat="server"
Text="txtMapMsg"
CssClass="Msgbox"
Width="80%"
Visible="False"
BackColor="#F7B432"></asp:Label>
</td>
</tr>
<tr>
<td align="center" valign="top" colspan="4" width="60%">
<asp:TextBox ID="tb_fromPoint" runat="server" meta:resourcekey="tb_fromPointResource1"></asp:TextBox>
<asp:TextBox ID="tb_endPoint" runat="server" meta:resourcekey="tb_endPointResource1"></asp:TextBox>
<cc1:GMap ID="GMap1" runat="server" Key="googlemaps.subgurim.net" CommercialKey="googlemaps.subgurim.net_Commercial" enableServerEvents="true" />
<div id="div_directions"></div>
</td>
<td align="center" valign="top" colspan="4" width="40%">            
</td>
</tr>
</table>
</asp:Content>

这是用于创建方向的代码

Protected Sub GetDirections()
Dim NavcareDirection As New GDirection()
Dim sItemNbr As String
txtMapMsg.Visible = False
txtMapMsg.Text = ""
If ddlDirectionsFrom.SelectedItem.Value = "0" Then
txtMapMsg.Text = "You must select a From to get directions"
txtMapMsg.Visible = True
txtOtherStart.Focus()
Exit Sub
End If
If ddlDirectionsTo.SelectedItem.Value = "0" Then
txtMapMsg.Text = "You must select a TO to get directions"
txtMapMsg.Visible = True
txtOtherStart.Focus()
Exit Sub
End If
sItemNbr = ddlDirectionsFrom.SelectedItem.Value
tb_fromPoint.Visible = True
tb_endPoint.Visible = True

NavcareDirection = New GDirection()
NavcareDirection.autoGenerate = False
NavcareDirection.buttonElementId = "bt_Go"
NavcareDirection.fromElementId = tb_fromPoint.ClientID
NavcareDirection.toElementId = tb_endPoint.ClientID
NavcareDirection.divElementId = "div_directions"
NavcareDirection.clearMap = True
NavcareDirection.errorMessage = "Directions Error"
GMap1.Add(NavcareDirection)
End Sub

我没有收到任何错误，也没有方向。 任何帮助将不胜感激。

Answer 1

一段时间后，我回来了，发现我做错了什么。

NavcareDirection = New GDirection()
NavcareDirection.autoGenerate = False
NavcareDirection.buttonElementId = "bt_Go"
NavcareDirection.fromElementId = tb_fromPoint.ClientID
NavcareDirection.toElementId = tb_endPoint.ClientID
NavcareDirection.divElementId = "div_directions"
NavcareDirection.clearMap = True
NavcareDirection.errorMessage = "Directions Error"
GMap1.Add(NavcareDirection)

到达那里后，我终于收到了错误消息，但我不确定为什么会收到它们。 我将把它放在一个新问题中。