C# - Listbox Is Null When Passing A Query String And Processing Data On Load?
Jan 11, 2010
got a wired problem (well I find it a wired problem :P)
I have an order page done in asp.net c#, and which a user adds ingredients to a set of list boxes, once the user and finished adding items, they get combined to make a sandwich then added to another list box that shows the sandwiches and their ingredients. I also have a button to allow the user to remove the ighlighted sandwich from the order, this all works fine until the page loads up with a query string that skips the adding of ingredients and just shows the sandwiches on a order, the listbox of sandwiches populates fine but I then get an error when the remove button is clicked which is
[Code]
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Aug 20, 2010
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I have the following ItemTemplate in Repeater1
[code]....
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Through searching I've seen suggested such ideas as Convert.ToDate(value), CDate(value), and so on.
None of these work. You cannot convert an empty string or null value to a date. I don't know about the numeric value.
So, barring any non-working examples already given. What is standard. Its not like I've stumbled across some never afore seen problem.
Here is my code, but its quite typical.
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Mar 1, 2010
We have an ASP.NET web service that invokes a stored procedure on our DB (Oracle 11g). The problem is that the call to the procedure blows up every time an empty string is passed as one of the parameters. We're seeing an ORA-01084 error, which indicates to me that call is failing before the procedure is actually run.
Here's the procedure, minus some logic that I believe is not relevant:
[Code]....
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Feb 8, 2010
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Jan 20, 2010
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.aspx
<div>
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<br />
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<br />
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<br />
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<br />
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<br />
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<br />
</div>
.cs
protected void cmdGetAssignment_Click(object sender, EventArgs e)
{
//Check the assignmentID is an integer
int AssignmentID = 0;
try
{
AssignmentID = TypeConv.CInt(txtAssignmentID.Text);
}
catch
{
}
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{
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{
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}
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}
}
Code example passing through a query string parameter of an assignment id would be great.
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Jun 10, 2010
I would like to pass a query string for example [URL]to my webservice below. I would like to get that "id" and pass it to the getmsg method.
public string GetChatMsg(string sGUIDParam)
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Mar 2, 2015
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Jul 26, 2010
I have this code which takes a value from a dropdown control as a parameter.
[Code]....
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Mar 10, 2010
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[URL]
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Mar 30, 2010
I'm trying to pass the text value of a text box as a query string value to a stored procedure. I was hoping someone could point me in the right direction. Button Code:
[Code]....
Stored Procedure:
[Code]....
The results page datalist:
[Code]....
Code Behind of results page:
[Code]....
I'm sure i've got this entirely backwards. However if I change the NULL value in the stored procedure with some string value (eg."Donkeys") it pulls all the values that contain "Donkeys" into the datalist on my results page.
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Header.aspx.cs
[Code]....
Then checking frameURL querystring in default.aspx page load:
[Code]....
when the querystring is null, the SiteSummary.aspx page is getting loaded in content frame without any issue, but when there is a querystring value the page is not being loaded.
Here is my Default.aspx page
[Code]....
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Jul 21, 2010
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Page 1
[Code]....
[Code]....
Page 2
[Code]....
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Feb 23, 2011
i have a page from which i send a email to a client which has link to this page with a query string. when we click we fetch the value of query string in the page load. But its showing an error when we load the page because at that time we are not sendign the query string.
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Question basically crams it all in... I'm loading a page with a querystring (ID), and I need to use that ID to set the selected item of a ListView when the page loads. The ID is a DataKey on the ListView. I have no code of value to post--none of my attempts at this work.
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Apr 26, 2010
I load the detials of a selected row into a detail view for processing, after the record is processed i delete it from the grids datasource, the grid redisplays with the next row showing my selected row format and i want to clear that row from being selected as it was not really selected
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Nov 17, 2010
in 1st List Box i am populating Items List and on selection of any Items The 2nd ListBox populated with Distinct Dates of Sales of the Particular Items. (Here is face a problem as i am unable to display only Date in 2nd List Box as it is also dislayig the Time as the Databasse Field is Datetime) and now i want to pass the Date from 2nd Listbox to 3rd List Box to Populate all the records of this date into 3rd LsitBox.
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Jan 4, 2011
This is an ASP.NET 3.5 web app written in C# using VS2008 and connecting to an MS SQL backend. It is using ad hoc queries in a strongly typed dataset to pull from the database. This query (shortened for clarity) is designed to allow optional input of parameters (a requirement) or pull all records if no parameters are input. It works normally in SQL Server Management Studio with the addition of Declare and Set statements and it works normally in the TableAdapter's Query Builder:
[Code]....
The markup contains this ObjectDataSource, which is tied to the TableAdapter with the above query:
[Code]....
The problem I'm having is in passing null values to the ODS to feed to the query. Tying the ODS parameters directly to the dropdownlists and textboxes didn't work. Got an error message that there was a mismatched data type. Tried several combinations of code to feed the right values to the ODS parameters but couldn't find one that worked. Is the problem in the query or am I setting up the code-behind wrong? Here's the code:
[Code]....
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I want to use multiple selected values from my list box to my sql query as how can i do this
i fill my listbox with following code to use selected multiple values in my sql delete query for deleting selected records
Dim connect, strsql As String
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