1. Check whether you are trying to upload a document with size more than 4 MB. Refer this link. 2. Also check the size of the ViewState of your page. If the ViewState has a larger size, it might cause this error to occur. Check this thread.
Declare an <a> object in the HTML markup as below. See the runat="server" property. So that you can set/get the properties of <a> object from the C# code behind class file.
Without knowing the name, url of the web service, how can you consume it in your application.
A .net web service is deployed in IIS. Therefore if you know the server name and have remote access to that server, find it by opening IIS in the server and browse the web service.
1. Since the asp.net application runs under ASPNET account, check whether that account has read/write access on .MDB file. 2. Check if the .MDB file has read-only file attribute set. if it is set read-only , remove it.
Solution 1. If you have entiries like <add assembly="System.Web.Extensions, Version=1.0.61025 ..../> and System.Web.Extensions, Version=3.5.0.0..../> in your web.config(under <assemblies> section), remove the first one.
Solution 2. If you only have assembly entry for version 1.0.61025 in web.config, then change it to version 3.5.0.0 accordingly.
Also you need to check whether this assembly exists in your GAC.
If the above solutions do not solve your problem, post the details under <assemblies> section from your web.config.
I have posted the html content only except page directive. Therefore other things are common to bothe VB/.NET and C#.
onkeydown is a client side(javascript) event. It is a warning when you put client side event in Server side control. Do not worry about that and ignore it.
Just copy all the content below header tag and paste in a sample .aspx page. It will work. Just ensure that you have server side client event exists for two command buttons.
Session.RemoveAll() and Session.Clear() are same. Both methods removes all keys and values from the session-state collection. But the current Session is not cancelled. That is Session.SessionID will be the same before and after calling these two methods.
But Session.Abandon() will cancel the current Session. That is, Once the Abandon method is called, the current session is no longer valid and a new session can be started.
Abandon causes the Session_OnEnd() event in the Global.asax to be raised. A new Session_OnStart() event will be raised on the next request.
Using these methods depends on your requirement. For example, you can call Session.Abandon() when the use logout your application.
Also you may want to clear all the keys in the Session object when the user goes to a landing page, for example, home page. In this scenario, you can use Session.Clear().
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim text As String text = TextBox1.Text MsgBox(Text) End Sub
Private Sub TextBox1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown If e.KeyCode = Keys.Enter Then Button1.PerformClick() End If End Sub
when i hit enter button within textbox click will perform on button this is what i need to do in asp.net because i did'nt find _KeyDown event of textbox in asp.net i hope it will clear you!
Well. If you want to postback and call the button's click event when enter key is pressed in the TextBox, then set the defaultbutton property in the <form> tag to the button's id.
hi all. i've been doing a checkbox that is controlled by bitmaps. it is successful when i checked the check box and updated it. but it is not successful when i try to uncheck and update it. it will be as if it was checked like before.
below is my coding
Dim ItemCount As Integer = 3
Dim Total As Integer = 0
For i = 0 To ItemCount
Dim chk As CheckBox = Page.FindControl("cb" & StringValue & i.ToString)
If chk.Checked Then
Total = Total + RefNo(i)
End If
Next i
Return Total
thanks
Your question is not clear.
You are summing up some values for the checked items. Also you posted the code segment partially. What do you expect for the uncheck items ?
PlaceHolder control serves as container to add controls dynamically to a web page at run time. The PlaceHolder control does not produce any visible output and is used only as a container for other controls on the Web page.
Therefore you cannot use it to show popup window.
You can use DIV to show a popup using CSS layers and javascript.
The Session ID is randomly generated by ASP.NET and stored in a non-expiring session cookie in the browser. The Session ID value is then sent in a cookie with each request to the ASP.NET application.
The session will be expired based on the session timeout set in the server.
If you need read-only access to the data, something often done inside an ASP.NET application, using a DataReader makes sense. For example, you are filling the textboxes/label controls in a page, then you can use data reader.
You can use datasets if you are going to persist the data between postbacks.
I assume that category id is set as identity column in your database table. Identity column values will not be decreased after a delete operation. It is not adviceable to decrease the primary/unique id values during a database operation. Assume that you have 100 records and if you are deleting 50th record, then you want to reorder the table?.
Even if the focus is in TextBox1, after clicking the button, the focus moves to the button(TextBox1 will lose the focus). Therefore write code for the onclick event of the button to fill 'abc' to TextBox1 and set the focus again to the TextBox1.
But the above code will work in IE only. Also you need to enable ActiveX component in your browser settings.
For encryption of the data at client side, you need to use javascript. Since code is rendered at client browser, your encryption logic can be visible to the end user.
ASP.NET is a web application framework, a subset of .NET Framework, which allows programmers to build dynamic web sites, web applications. This Framework provides components/classes to build a web site easily.
To use this built-in components and classes, you need to write code using either C# or VB.NET.
The actual error cannot be identified based on this error message. Set the mode attribute to off in the <customErrors> attribute in web.config. It will display detailed error message.
Also check whether any error message is logged in Event Viewer.
Set the timeout properties of WCF application to increase the default timeout. This can be done on the client side programmically or with a client side App.Config or a Web.config.
You can configure the OperationTimeout property for Proxy in the WCF client code.
For example
DirectCast(service, IContextChannel).OperationTimeout = New TimeSpan(0, 0, 240)
