I have a simple FileUpload box that is alble to accept files and save them to a location on a server on one web page, but the page I'm working on now has a form view inside of a radPageView, inside of a RadMultiPageView. When I attempt to see if there is a file in the FileUpload control, I am met with null values every time, eventhough I'm loading in a file. Here are some snippets of my code, trimmed down a little. Part of the problem is that in all of the tutorials I've found online, users are entering some of this information in the vb for the button click event, where I'm entering it in the xyz Handles .Updating section.
The prolem I run into is that when I get to the FileUpload1.HasFile it shows that there is no file, even if I have uploaded one. In fact, it shows Null, as if I haven't properly connected to the FileUpload control. I messed around with different ways to connect to the FileUpload control, but none of them really worked.
<telerik:RadMultiPage ID="RadMultiPage1" runat="server" SelectedIndex="0" CssClass="multiPage"
BorderColor="Black" BorderStyle="Solid">
<telerik:RadPageView ID="pvMemoDoc" runat="server">
<asp:FormView ID="fvMemoDoc" runat="server" DefaultMode="Edit" DataSourceID="dsMemos"
DataKeyNames="coreDocID">
<EditItemTemplate>
<table class="tblNoSpace">
[...Other Code...]
<%--Begin file upload section--%>
<tr>
<td class="fieldLabel">File to upload:<br />
</td>
<td>
<asp:FileUpload ID="FileUpload1" runat="server" Width="600" ToolTip="Browse for file" />
</td>
</tr>
<tr>
<td colspan="2" style="text-align: right">
<asp:Label ID="lblFU1" runat="server" Enabled="false" Visible="false"
Text="(only select new file if you wish to replace existing file)"></asp:Label>
</td>
</tr>
<tr>
<td>
<br />
<br />
<asp:Button ID="btnUpdateMemo" CommandName="Update" runat="server" Text="Update Memo"
CausesValidation="true" ValidationGroup="MemoInformation"
ToolTip="Save updates" />
</td>
</tr>
</table>
</EditItemTemplate>
</asp:FormView>
</telerik:RadPageView>
[...Other Code...]
</telerik:RadMultiPage>
VB Code:
Private Sub DsMemo_Updating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceCommandEventArgs) Handles dsMemos.Updating
Dim FileUpload1 As FileUpload = CType(fvMemoDoc.FindControl("FileUpload1"), FileUpload)
'Dim FileUpload1 As FileUpload = CType(fvMemoDoc.Controls(0).Controls(0).FindControl("FileUpload1"), FileUpload)
'Dim FileUpload1 As FileUpload = CType(fvMemoDoc.Controls(0).FindControl("FileUpload1"), FileUpload)
'Dim FileUpload1 As FileUpload = TryCast(updateButton.Parent.Parent.FindControl("FileUpload1"), FileUpload)
If FileUpload1.HasFile Then
[...Other Code Here..]
[...Never gets past FileUpload1.HasFile...]
End If
End Sub
It appears after some tinkering that there was an issue with modify versus read/write permissions.
The way that control was working is that it would store a temporary file and then delete it off of the server, so that is why no file was showing.
Giving the web app modify access to the folder where the temporary files are stored solved my issue.
Related
I am creating a password text field that shows/hides password requirements as the user types their password into a TextBox with TextMode="Password". I added a TextChanged event so I could check the TextBox text against the requirements each time a new character is typed/removed.
The problem I am having is that the TextChanged event is seemingly not being triggered ever. Here is the relevant code:
<tr>
<td style="text-align: right">
<asp:Label ID="Label1" runat="server" CssClass="BoldLabel14px" Font-Bold="True"
Text="New Password"></asp:Label>
</td>
<td>
<asp:TextBox ID="NewPassword" runat="server" Font-Names="calibri"
Font-Size="14px" TextMode="Password"></asp:TextBox>
</td>
</tr>
Protected Sub NewPassword_TextChanged(sender As Object, e As EventArgs) Handles NewPassword.TextChanged
System.Diagnostics.Debug.WriteLine("NewPassword Text = " & Me.NewPassword.Text)
CheckPasswordRequirements(Me.NewPassword.Text)
Me.PasswordRequirementsCapital.Visible = False
End Sub
From this code, the output never shows the debug statement as the TextBox is modified. Is different way to grab the text as it is written? I am using Visual Studio, vb.net, and asp.net.
The main reason the event isn't fired is because you don't have an event tied up to even be fired.
It should be something like:
<asp:TextBox ID="NewPassword" runat="server" Font-Names="calibri" Font-Size="14px" TextMode="Password" ontextchanged="NewPassword_TextChanged" AutoPostBack="True"></asp:TextBox>
The event itself will not fire until you leave though, it's a server side process and only happens between posts to the server. If you want to handle this as the text is changing look into JavaScript and or JQuery.
I have a below section which is implemented to display loader gif associated to the update panel
<asp:ScriptManager runat="server"></asp:ScriptManager>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="updPnlPromotion">
<ProgressTemplate>
<img alt="" src="Image/Ajaxloader.gif" />
</ProgressTemplate>
</asp:UpdateProgress>
This is the update panel which contains the dropdown which is a data bound control binded on the radio button checked changed event, but rather than partial postback and the display of loader gif, the entire page posts back.
<asp:UpdatePanel ID="updPnlPromotion" runat="server" UpdateMode="Always">
<ContentTemplate>
<td align="left" style="width: 20%;background-color:#CDCD9C">
<asp:radiobutton ID="rdbPromotion" runat="server" Text="New Promotion" AutoPostBack="true" GroupName="TacPlan" OnCheckedChanged="rdbPromotion_OnCheckedChanged" style="font-weight:bold" />
</td>
<td align="left" style="width:30%; vertical-align:middle; background-color:#EBEBEB; text-align:center">
<asp:DropDownList runat="server" ID="ddlPromotion" Width="95%"></asp:DropDownList>
</td>
<td>
<asp:Label Text="*" ForeColor="Red" Visible="false" runat="server" ID="lblPromoPlanMandatory"></asp:Label>
</td>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="rdbPromotion" EventName="CheckedChanged" />
</Triggers>
</asp:UpdatePanel>
I don't believe there's an issue with the code you've posted. I created a new ASPX page and copied your code into it. It works as expected (I added a counter to monitor load events):
Here's the code behind I used for testing this:
Public Sub rdbPromotion_OnCheckedChanged(sender As Object, e As EventArgs) Handles rdbPromotion.CheckedChanged
System.Threading.Thread.Sleep(2000)
End Sub
Private Sub Default5_Load(sender As Object, e As EventArgs) Handles Me.Load
Me.counter.Text = Integer.Parse(Me.counter.Text) + 1
End Sub
Seems like a longshot, but maybe the browser you're testing with doesn't support partial rendering, or ASP.NET doesn't think that it does?:
http://ajax.asp.net/ajax/documentation/live/mref/P_System_Web_UI_ScriptManager_EnablePartialRendering.aspx
I have found the solution to my problem, upon reviewing the web.config file I found the weird setting xhtmlConformance mode="Legacy" there which was basically stopping the page to ajaxify somehow, by removing it, it works as expected.
I am using an asp TextBox control with its TextChanged event and my goal is to capture text as a user enters it. If there are one or more characters entered, I would like a button control to be enabled without the user having to leave the TextBox control.
My source code for the TextBox on the aspx page is
<asp:TextBox ID="NewSpendingCategoryTextBox" MaxLength="12" runat="server"
AutoPostBack="True"
OnTextChanged="NewSpendingCategoryTextBox_TextChanged"
ViewStateMode="Enabled" >
</asp:TextBox>
and my source code on the code behind page is
Protected Sub NewSpendingCategoryTextBox_TextChanged(sender As Object, e As System.EventArgs) Handles NewSpendingCategoryTextBox.TextChanged
Dim strSpendingCategoryTextBox As String = Nothing
strSpendingCategoryTextBox = NewSpendingCategoryTextBox.Text
If strSpendingCategoryTextBox.Length <= 0 Then
Me.NewSpendingCategoryInsertButton.Enabled = False
Else 'strSpendingCategoryTextBox.Length > 0
Me.NewSpendingCategoryInsertButton.Enabled = True
End If 'strSpendingCategoryTextBox.Length <= 0
End Sub
So it appears I have to use javascript to enable or disable the insert button. Can someone guide me on how to get an element within a table? The table sits in a Panel as well.
below is the aspx code...
<asp:Panel ID="AddSpendingCategoryPanel" Visible="false" runat="server">
<table class="AddNewTable">
<tbody>
<tr>
<td>
<asp:Label ID="lblSpend" runat="server"
Text="Spending Category:">
</asp:Label>
</td>
<td>
<asp:TextBox ID="txtSpend" MaxLength="12"
runat="server"
AutoPostBack="True"
OnTextChanged="txtSpend_TextChanged"
OnKeyDown="return CheckSpendTextBoxValue()"
ViewStateMode="Enabled" >
</asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Button CssClass="frmbtn" ID="btnInsertSpend"
runat="server" Text="Insert" />
</td>
<td>
<asp:Button CssClass="frmbtn" ID="btnCancelSpend"
runat="server" Text="Cancel"
CausesValidation="False" />
</td>
</tr>
</tbody>
</table>
</asp:Panel>
Run this code in the OnKeyPress event or consider JavaScript. The textbox does not fire the Text_Changed event til Tab or Enter are used.
Simplify the boolean check.
Me.NewSpendingCategoryInsertButton.Enabled = (NewSpendingCategoryTextBox.Text.Length <> 0)
I'm not sure exactly how you would do it. But the ASP.NET code is executed on the server that is hosting the web page.
I'd highly recommended doing it on JavaScript which can be run client side. Hopefully this article is of use to you.
How to check if a textbox is empty using javascript
I have been working on a file upload section within my ASP.NET site.
With the below code, I am able to get a user to upload documents based based on the Regular Expressions set within the RegularExpressionValidator. I am happy that this works accordingly.
What I would like to complete now is a message to indicate that the file has been uploaded successfully. I am unsure how to complete this, but would like to add it to a Label named "fileuploaded".
Here is my code for the .aspx page:
<table width = "60%">
<tr>
<td>Modes of Operation:</td>
<td>
<asp:FileUpload ID="FileUpload1" runat="server" />
</td>
<td>
<asp:Button ID="buttonUpload" runat="server" Text="Upload" ValidationGroup="FileUpload" />
</td>
</tr>
<tr>
<td colspan="3">
<asp:RequiredFieldValidator ID="FilenameRFValidator" runat="server"
ControlToValidate="FileUpload1" Display="Dynamic"
ErrorMessage="RequiredFieldValidator" ValidationGroup="FileUpload">
* Please select a file to upload...
</asp:RequiredFieldValidator></td>
</tr>
<tr>
<td colspan="3">
<asp:RegularExpressionValidator ID="FilenameRegExValidator" runat="server"
ControlToValidate="FileUpload1" Display="Dynamic"
ErrorMessage="RegularExpressionValidator"
ValidationExpression="(?i)^[\w\s0-9.-]+\.(txt|pdf|doc|docx|xls|xlsx)$"
ValidationGroup="FileUpload">
* Please upload file in format .pdf / .docx / .xlsx.
</asp:RegularExpressionValidator>
</td>
</tr>
</table>
<asp:Label ID="lblfileuploaded" runat="server" Text=""></asp:Label>
And here is my code so far for the VB page:
Protected Function GetUploadList() As String()
Dim folder As String = Server.MapPath("~/Uploads")
Dim files() As String = Directory.GetFiles(folder)
Dim fileNames(files.Length - 1) As String
Array.Sort(files)
For i As Integer = 0 To files.Length - 1
fileNames(i) = "" & Path.GetFileName(files(i)) & ""
Next
Return fileNames
End Function
Protected Sub UploadThisFile(ByVal upload As FileUpload)
If upload.HasFile Then
Dim theFileName As String = Path.Combine(Server.MapPath("~/Uploads"), upload.FileName)
If File.Exists(theFileName) Then
File.Delete(theFileName)
End If
upload.SaveAs(theFileName)
End If
End Sub
Protected Sub buttonUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles buttonUpload.Click
UploadThisFile(FileUpload1)
UploadedFiles.DataBind()
End Sub
Any help in advance is much appreciated.
As Tim Schmelter says in the comments, you should just set the text of the label after SaveAs has been successfully called.
You can use a Try -> Catch to make sure the there were no exceptions (according to the MSDN article linked above, the SaveAs method could throw an HttpException). Something like this:
Try
upload.SaveAs(theFileName)
fileuploaded.Text="File uploaded successfully"
Catch ex As Exception
fileuploaded.Text="Upload failed. Reason: " + ex.Message
What I would like to achieve:
I would like a user to be able in insert a row into the listview. BUT not into a database.
What I am stuck on:
Currently I am stuck on the OnItemCommand, i dont seem to be entering the method. Any help would be great Code below.
<LayoutTemplate>
<table>
<th>
</th>
<th class="grayHeader">
<asp:Label ID="lblHeader" runat="server" />
</th>
<tr>
<asp:PlaceHolder runat="server" ID="itemPlaceholder"></asp:PlaceHolder>
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
<asp:Button runat="server" ID="btnDeletePerson" Text="-" CommandName="deletePerson"/>
</td>
<td>
<asp:Label ID="lblPerson" runat="server" Text='<% #Eval("Person") %>'></asp:Label>
</td>
</tr>
</ItemTemplate>
<InsertItemTemplate>
<tr>
<td>
<asp:Button ID="btnAddUser" runat="server" CommandName="Insert" ext="+" />
</td>
<td>
<asp:TextBox runat="server" ID="txtInsert"></asp:TextBox>
</td>
</tr>
</InsertItemTemplate>
Protected Sub ListGrantee_OnItemCommand(ByVal sender As Object, ByVal e As ListViewCommandEventArgs)
Select Case e.CommandName
Case "Insert"
Dim test As ListViewItem
test = New ListViewItem("test")
listGrantee.Items.Add(test)
Case ""
Case Else
End Select
End Sub
I would save you temporarily created Users in the ListView's Datasource flagged as temporary(add a new DataColumn). Afterwards you have to DataBind the Listview. Store the flag in an invisible control(label) so that it is saved in the ViewState on Postbacks.
Further to my comment - as I understand your problem, your OnItemCommand event handler is not getting triggered. Here's how I set up event handlers (using VS2008).
In the design view for the aspx file, I highlight the control that I am interested in. Then, in the "Properties" window, I click on the Event's button (the little lightning flash), and scroll down the list of events until I find the one I am interested in.
Double click in the column next to the event name - this will bring up the code behind page, with the shell of the event handler in place - including the all important "handles ...." clause.
Now enter your event handling code....
I had viewstate turned off. Which disabled the event mechanism, flipped view state back on problem solved.