The following code works well as long as I pass a querystring value to the datalist.
Private Sub BindGrid() Dim id As Integer = Integer.Parse(Context.Request.QueryString("id")) Dim strConnString As String = ConfigurationManager.ConnectionStrings("Conn").ConnectionString Using con As New SqlConnection(strConnString) Using cmd As New SqlCommand() cmd.CommandText = "select Id, Name from tblFiles where Id=@Id"
[Code] ......
However, the page errors with the message "Value cannot be null." if I don't pass a value. I know that DataList does not have an EmptyItem Property like a Gridview control. I do not want the page to error if I don't pass a value. Need info to deal with empty values in a datalist.
Most websites have pointed me to this code to use:
The 'list' throws an error. The error is "Too few type arguments to 'System.COllections.Generic.List". I am not sure if the code is written in C# and that is what is causing the error. It seems that it should work but I can not figure out the 'list' error.
after I pass querystring parameter to page,page works as expected,but after that when I change my control parameter(dropdownlist selected value how can I set querystring to null or empty...
I want to paging my datalist but the datalist takes a querystring field catID from categories repeater. How can do I paging my datalist with catID querystring?
i want to pass multiple arrays variable in query string.for example i have three checkbox list Brand ,Price, Attribute any arrays variable may have more than one value key arrays variable are fixed for checkboxlist
1-checkbox list Brand has Brand []arrays variable
2-checkbox list Price has Price []arrays variable
3-checkbox list Attribute has Attribute []arrays variable
now i have selecting two -two from every checkbox list .than i want to query string something like this
in my asp.net+access web code in vb. There is three labels named (tata.text,tvs.text,msu.text) is there any option on clicking on the label named tata.text the data pertaining to tata be displayed in a gridview in another page or a popup display in same page.
I have passed the value from one page to next page using a querystring. In the next page i need to get the value from the query string and based on the value, it needs to checked with the database and the result set should be placed in the gridview, details view or listview anything else.
user mobileno email vicky 9848752322 ervigsh@gmail.com
In the details view or list view control, I need to get the value vicky from the url and based on the value's row in the database table need to be binded in any of the mentioned above controls.
In my asp.net+vb web. In a gridview there is a hyperlink filed . it works fine for all company except for company name like lerson & turbo . the code i used is as below
where id is the datakeyname of the grid now i had a requirement to add another datakename as UserId. and i need to have DataBinder.Eval for UserId also.
How am going to use two values in this anchor tag using DataBinder.Eval?
I was wondering how you could encrypt/decrypt your querystring in a simple asp.net page? some values need to be passed between different pages but the querystring cannot be changed or read.
Some say httphandles could be the solution for this.
MORE BACKGROUND INFO:
this is the problem, sometimes the sessions disappear without any reason (well there must be one but I don't know it yet). I've looked into the possible reasons but nothing that could cause it is happening. Therefore I cannot rely on it anymore. The cookie solution is a possibility but it will be more work to implement than simply using the querystring. The url can be copied at any time just not changed!
I have a catalog function whereby user can filter their selection by clicking radiobutton. For example, by selecting the Dining radiobutton, all packages related to dining would appear.And i using DataList1.Items. Count method to count the number search result. I had implement this method in the page_load, however the value of the number of datalist keep displaying previously loaded datalist. Here is my code :
Prior to adding paging using PagedDataSource I had dropdownlist and search box filters for my DataList. The guts of the code in aspx page for those parameters is below:
When creating the pager using PagedDataSource I did a tutorial which did not have parameters and all the code went in the code behind page. The guts of it is below:
The pager is great but now I need to add my filters. The page wont load if I add the "SelectParameters" code (above) to my aspx page and if I simply add the "WHERE" clause to the "SELECT" clause in the code behind I get an error stating that I need to add a scalar variable.
I have found some examples through googling but nothing specific enough.
Prior to adding paging using PagedDataSource I had dropdownlist and search box filters for my DataList. The guts of the code in aspx page for those parameters is below:
HTML Code:
[code]....
The pager is great but now I need to add my filters. The page wont load if I add the "SelectParameters" code (above) to my aspx page and if I simply add the "WHERE" clause to the "SELECT" clause in the code behind I get an error stating that I need to add a scalar variable.
