DataSource Controls :: Get ArrayList Value In SqlDataReader
Sep 24, 2010
I'm trying to convert some code from VB to C# on a site i'm working on and can't seem to get the arraylist to function properly.
Here is what we currently have in the codebehind:
[Code]....
Which we then call from the page using:
[Code]....
I want to convert this to C# as the rest of the code on the new site is in C# and I'm having problems with the ArrayList. I've got the other parts of the code all converted fine it's just the GetContent Function that isn't working right. Here's what I have:
[Code]....
I got an error on the "objSDR.Item" part of the code saying "SqlDataReader doesn't have definition for Item" and so if I changed this to the code above. Only problem now is I can't call this from the page using the code below as there is no "Item" in the GetContent Function any more
I am trying to run a stored proc from this function. When I run it thorugh the debugger I can see that myReader.HasRows = true and myReader.FieldCount =14.
But the control does not go in the loop while (myReader.Read()) where I am trying to read Version field returned by the stored proc.
When I am using SqlDataReader class on that time without creating instance of the SqlDataReader Class I m using Command.ExecuteReader() Method. Why We not create the object of the SqlDataReader Class by using " new " Operator.We use like below:
SqlDataReader dr=cmd.ExecuteReader(); Why not we use this class like below:
When using the DataTable.Load(SQLDataReader) method, if the datatable is a property of a class, the set method is not called to populate the object. For example...
MySQLDataReader = command.ExecuteReader(); if (MySQLDataReader.HasRows)
myObjDataTable.Load(MySQLDataReader); -- The result of this will be 0 rows returned. The "Set" method of the object is never called.
I have several methods where I return a SqlDataReader to populate Gridviews, Listview, etc. I get random "Timeout expired" errors regarding connection pooling, so I decided to add using{} to my methods. The lack of using is a carry over from my more beginner days.Below I included the before and after code. The after code always gives me the "Invalid attempt to call FieldCount when reader is closed" error. I have tried various combination of using{}, but ALL result in the same error.What am I doing wrong? Also, from the code below what is the best way to structure this code to ensure no connection leakage?Before:
I want to add array list in sqlcommand.but i don't no how to pass it. My code is.
ArrayList ProductId = new ArrayList(); for (int i = 0; i < ShipmentPackage.Items.Count; i++) { ProductId.Add(ShipmentPackage.Items[i].ProductVariant.ProductID); } select * from TableName where id= ProductId(ProductId is my Arraylist)
I have a web page where a GridView will be shown with a column of different products and another column with checkboxes. Checking on the checkboxes will be equivalent to selecting the products. The selected products are saved to an arraylist. Then, the user has to click on a button located on the same page to analyze the selected products. On clicking the button, he/she will be directed to another page where a bar graph will be shown. The bar graph will be the result of having analyzed the products. How do I create the bar graph where the products are taken from the arraylist but I can make use of the datasource within the chart control to retrieve more detailed info(such as product sales) from the database, taking into account the products from the arraylist?
I know it is recommended to use a using statement with a sqldatareader, but I was wondering if it is necessary when you are setting the datasource of a control to a datasource directly. in some places in my code I do this.
using (SqlDataReader reader = getReader()) { while (reader.Read()) { // do stuff with data } }
when binding to a control I do this.
ddlCustomer.DataSource = getReader(); // get Reader returns a sqldataReader ddlCustomer.DataBind();
In the second case, do I need to use a using statement. Do i have to first declare an SqlDataReader in a using statement, then set the DataSource to that object. Seems like more clutter in the code, so i was hoping binding to the SqlDataReader disploses of the SqlDataReader.
i want to create a arraylist which will able to store user info like (username,machineIP,port ) for each user in the list & retrive this data when needed . any one tell me how i can do it or any alternative way without database or xml file.
Dim downloadsarray As New ArrayList downloadsarray.Add(iconlink) downloadsarray.Add(imgpath) downloadsarray.Add(filesize) downloadsarray.Add(description)
When using SqlDataReader.NextResult for 2 queries I am trying to I check if the second query returns any rows, but whether it has any rows or not the repeater2 is never hidden/false . I am doing something like this:
I am developing a message pool means like a Facebook when we click on above message icon all message show in list .then click on the sender name all message show that person. For
That kind of message poll am developed two pages one page is sender and the other one is receiver .when I send message from sender page it will be saved into data base and show into other pages text box.
Now problem is that the receiver pages cannot show all messages .it will show one first message which are saved into database.
I want it will show all messages which are sending from sender page. below my all code.
WebForm1.aspx.css using System; using System.Collections.Generic; using System.Linq;
I'm a little new in ASP.NET, so i don't know how the .NET machine fully works..I'm using two strategies to solve my problem, both invoked by a Button.Click event, but i don't know which one is better..My worries are about the server overload and page load time.This is the regular approuch i've used..
[Code]....
The second one is by using a funtion (named checkIfNumberExistsInDataTable) that does a binary search in a datatable to find a number
conn.Open() Dim dr As SqlDataReader = cmd.ExecuteReader Dim da As New DataTable()
I have a GridView control of 5 columns out of which 2 are actually computed (there cell values comes from column 1, 2 and 3) columns. I want to save all the values of my gridview columns in a 5 dimension ArrayList and then lateron bind that ArrayList with a repeator control.
I'm new to asp.net and I'm trying to implement a shopping cart.With the following code (. Vb):
PartialClass a Inherits System.Web.UI.Page Protected Sub Page_Load(sender As Object, eAs System.EventArgs) Handles Me.Load Dim FileNames As ArrayList =Session("SessionCarrito") If FileNames IsNot Nothing Then For Each Fname As String InFileNames ListBox1.Items.Add(Fname) Next End If End Sub End Class
That code shows a ListBox with the file names that are stored in a session variable. Works fine but I need to show those filenames in a gridview which also display a ID for each item and a button that will eliminate these items. How I can change my code to work with a gridview?
I've been trying to bound an arraylist to a grdview for display and managed to work out the following:
[Code]....
At the point where rows are added to dt, i'm trying to get arraylist (Tweet) to be read row by row to insert each of it's fields into dt. There is no error but when run in browser, each cell of the gridview shows 'DataExtraction.Tweet'.I'm not sure where to go from here.
I have an arraylist that contains some values. (e.g. playerName). I also queried for values in the database (e.g. playerName, playerSales) and I need to match the playerName in the arraylist to the corresponding ones that I did a query from the database. (match those with the same playerName). From there, I need to create a bar graph with the respective playerName and their sales (playerSales).
A portion of the code is shown below:
[Code]....
The arraylist I mentioned was saved to a session to be used in another page. Is my code right? And how can I create the graph from the values?
I want bind GridView from database using ArrayList. But my code not worked.I shared code below:
public System.Collections.ArrayList GetTime(int user, int kod) { SqlConnection con = new SqlConnection(UserData); SqlCommand cmd = con.CreateCommand(); System.Collections.ArrayList result = new System.Collections.ArrayList(); string sql = "select kod,dshbe,sshbe,chshbe,pshbe,jma,shbe,koduser where koduser ="+user+"and kod =" + vr;
