Vb.net - Get The Number Of Rows Returned By OleDbDataReader?

Jun 18, 2010

After connecting to a database using DataReader, how can I count the number of rows ?

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ADO.NET :: Get Number Of Returned Rows By Data Reader?

Feb 24, 2011

I have a web page where I want to return number of returned rows by datareader as I need to get Count of rows. My code is as follow :

SqlCommand cm = new SqlCommand(); SqlDataReader dr;sqlconnection cn; public int Returndatareader( int x)
int s;
string sqlstr = "SELECT COUNT(*) FROM P_Events as Counter";
cm.CommandText = sqlstr;
cm.Connection = cn;
dr = cm.ExecuteReader();
if (dr.Read())
int y = dr.RecordsAffected;
s = y;
//return y;
return x;

but the rows affected count is -1 everytime i run my code.

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Trying To Get The Number Of Rows Returned In A Query In Visual Basic?

Feb 11, 2010

Trying to get the number of rows returned in a query in Visual Basic.The query returns 3 rows.Dim td As Integer = dataset1.Tables(0).Rows(0).ItemArray(0) has a value of 1.Dim tg As Integer = GridView1.DataSource.tables(0).rows.count has a value of 3.1. Why do aren't they both 3 ?2. Is there a best way of getting the number of rows ?3. Where can I find a tutorial or book that explains the notation above ?

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DataSource Controls :: Count The Number Of Rows Returned From The Database?

Jan 17, 2010

I have executed my query in VB with:


I now want to count the number of returned rows so that I can say:IF rows_returned = 1 then login else deny
I think you get the idea.P.S. I know this is not the most secure method of login but I do not want to use the ASP.NET configuration manager as I like to understand what is happening. I am starting off very simple and I shall work up from there.

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SQL Select Union and total number of returned rows?

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Using C#, how can I check the total number of rows returned from a database when using a Repeater? The reason I need to check is I need to alter the presentation of the data when there is only 1 row returned.

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When a user submits the query to SQL when clicking a button I need to get a count of the number of rows that are returned. Which event does the gridview.count code need to be place in?

Right now I have it in the btn_click event, but in order to get it to count the rows you have to hit the button twice since the query is not returned yet. Here is my code.


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Forms Data Controls :: Count Number Of Rows For Certain Rows?

Nov 25, 2009

i have a gridview with following column

Origin | Destination | Month | Total Passenger
A B 1 500
A B 2 670
A B 3 730
B A 1 320
B A 2 500
B A 3 669

is it posible to count number of rows which Origin "A" and Destination "B" from my gridview?

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Apr 9, 2010

I want to count the number of results results returned by my query and print the number to a literal on the page.How would I do that?

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SQL Server :: Use Cursor To Loop Through Number Of Records Returned?

Mar 25, 2011

using sql server 2005.

i need to query a table which normally will return multiple records for the id and I need to loop through probably using a cursor and pull values out from each record to make a string.

what is the syntax for this? i've seen cursors using a set number (EX: loop through 5 times) but I need to create a query so that I can loop through once for each row returned from my query.

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Security :: Filtering The Rows Returned By Membership.GetAllUsers()?

Dec 22, 2010

In our asp.net application, we use Membership.GetAllUsers() in order to allow the administrator work with the site's membership.

Is there a way to filter the rows returned by Membership.GetAllUsers() method? I'd like to be able to have a textbox where (part of) the user's first name / last name is entered and then call GetAllUsers() - or a different method - to get only the users whose name begins with value in the text box.

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SQL Server :: Desired Rows Not Returned Because Of Null Values

Sep 26, 2010

I have a property table and an image table.

I want this query to return all distinct properties and a thumbnail image. However some properties don't have thumbnail images and they don't get returned by the query. If the imgid is null I still want to return the property. Not sure of how to do this.



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DataSource Controls :: How To Get Number Of Records A Query Has Returned Using SqlDataSource Control

May 17, 2007

I'm using SqlDataSource control.Is there a way to know how many records a query has returned?

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Forms Data Controls :: Limiting Number Of Records Returned In XML Feed?

May 18, 2010

Currently I have

dlRSS.DataSource = GetRSSFeed("http://www.foodsafetynews.com/headlines.xml")
Function GetRSSFeed(ByVal strURL As String) As DataTable
'Get the XML data
Dim reader As XmlTextReader = New XmlTextReader(strURL)
'return a new DataSet
Dim ds As DataSet = New DataSet()
Return ds.Tables(2)
End Function
<asp:DataList ID="dlRSS" runat="server" Width="100%" >
<strong><p><div><asp:HyperLink ID="TitleLink" runat="server" Text='<%# Eval("title") %>' Target="_blank" NavigateUrl='<%# Eval("link") %>'/></div></p></strong>
<strong><p> <div><asp:Label ID="SubtitleLabel" runat="server" Text='<%# Eval("description") %>' /></div></p></strong>

But is returning all rows in RSS Feed I would only like top 5 or so

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SqlHelper.ExecuteReader Results Varying And Unexpected When Certain Number Of Records Are Returned?

Jul 4, 2010

Note: You may not need to read the whole thing to know what's wrong... skip down to the part about the 3 scenarios if you'd like. Only read the begin if you'd like some background info on how I've tried implementing this and where the errors occurred.To begin with, I'm trying to retrieve a list of Clients stored in the CRM_Clients table for a given callerId.I retrieve the clients from my Controller with the SelectLiveClientsForCaller method. The message is then passed on to the DAL through the static Instance method in the DataProvider class:

public List<Client> SelectLiveClientsForCaller(int callerID)
List<Client> results = new List<Client>();


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Can Check Rows Returned In A QueryString Parameter Based Entity Framework Query

May 29, 2010

I need to check if any rows are returned in a QueryString here's what I have so far.not sure what code to put to see if the row count is greater than 1

private void BindDataToGrid()
//MessageBoardEntities3 is ThemeableAttribute connection string name
int TID = Convert.ToInt32(Request.QueryString["ThreadID"].ToString()); // if Post ID is int
var context = new MessageBoardEntities3();
gvPosts.DataSource = from p in context.Posts
where p.ThreadID == TID
select new { p.Post1, p.PostID };
lblNoPosts.Text = "No posts found for this thread.";

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Forms Data Controls :: Make Visible A Label If The Returned Rows Are 0 In The Repeater?

Oct 8, 2009

I am trying to make visible a label if the returned rows are 0 in the repeater. The problem is that when it returns 0 results, I get an error

{"The IListSource does not contain any data sources."}

How do i bind the returned dataset so that I don't get that error and the footer template's lable is made visible ?


protected void Page_Load(object sender, EventArgs e)
DataSet ds = db.GetDataset("GetWebcasts");
this.rptWebcasts.DataSource = ds;
//if (ds.Tables.Count > 0)


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Access :: OleDbDataReader Is Null Even When Data Exists?

Dec 8, 2009

I'm writing a small asp.net app that uses an access db. I'm using a layered architecture and business objects. In my dataaccess class, I have tis method that returns all records by UserID:


The problem is that the reader object is null, even though the records with the specified userid exist in the db.Using the debugger, I can see that the parameter passed to the method is correct, and the SP is as simple as:


I have tried using an AccessDataSource directly on the aspx page and hooking it up to a grid, and then the records are returned. Also, using my dataaccess class, I can insert new records without problems, so the connection works just fine.

I have used this model in many apps with sql server, and it allways works. So, my question is if there are any known issues when using OleDbDataReaders with asp.net? Am I using it correctly, or am I missing something?

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Databases :: OleDbDataReader Can't Read Excel Cell With Bracket

May 21, 2010

I have an excel header that has the following header title : "REMARKS (i.e. awarded etc.)"

but it seems that it can't read the cell with the brackets or it is there is a certain length of the excel header?

While reader.Read()
Dim DataRow As DataRow = dtDataTable.NewRow()
DataRow("Remarks") = Trim(reader("REMARKS i.e. awarded etc.").ToString)
End While

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ADO.NET :: How To Get The Number Of Rows From Sqldatareader

Mar 29, 2011

how to get the number of rows from sqldatareader

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Databases :: Importing Excel Sheet Into Sql Server Table Using OleDbDataReader?

Feb 12, 2010

I am trying to Importing Excel sheet into Sql server table using OleDbDataReader

the problem is it is not fetching the cell values with contains "," (comma) ex: cell value ="03280, 03281"

i am using OleDbConnection oconn =

OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="
+ Server.MapPath("Files\LineItems.xlsx") +
";Extended Properties='Excel 12.0 Xml;HDR=YES;IMEX=1';");

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Bulkinsert From CSV Into Db (C#) -> Max Number Of Rows In A Web Application?

Apr 28, 2010

Web application - C#, .Net, SQL 2k5.I recently used bulkinsert on an other application and I thought I would like to give it a try.

I am going to receive a CSV file with 1000 rows, which will most likely add 500 000 (that is five hundred thousand) records in the database.I don't have any idea yet about this huge amount if it's going to work out well. I am afraid that it will time out.

I didn't do any testing yet, but I am pretty sure it would time out eventually.

Is there a way to make it not time out (I don't know ... split the bulkinsert into 1000 pieces :D) or I should try to do something like BCP, with a SQL job ...

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Restricting Number Of Rows In Datalist

Jun 17, 2010

In my asp.net I am using Datalist in that I want to limit row count and want the sort to be in vertical. Let me know how to do this. Ex: I want my list to be like this

1 4
2 5
3 6

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Checking Number Of Rows In Dataview?

Feb 2, 2011

I want to check that the row index I specify is below the row count so it doesn't throw the error

Index 2 is either negative or above rows count.

how would I achieve this with my code?

Using connection As New SqlConnection(connStr)
Dim command As New SqlCommand
command.Connection = connection
Dim a As New SqlDataAdapter("SELECT top(3) name, (SELECT TOP (1) ImageId FROM Images WHERE(productid = products.Id)) AS imageId FROM Products WHERE beginnerdiscount = '1' ORDER BY Dateadded", connection)
Dim s As New DataSet()......

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How To Limit The Number Of Rows To Be Displayed On A Webpage

Dec 16, 2008

i have so many rows which i want to display on the pages maximum 10 rows on the page and next 10 on the other page n so on or i want next and prev. functionality

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How To Count The Number Of Rows In Gridview Automatically

Feb 3, 2010

I want to count the number of rows in Gridview ,thru JS. When SelectAll is executed,alert message 'a' is displayed,then page posts back to the server.1) It do not display the alert message gridLength 2)WHy the page is postbacked,I write return false???

function SelectAll()
var gvET='<%=GrdCostPetroleum.ClientID%>';
var gridLength = gvET.rows.length;
alert (gridLength );
return false ;

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How To Find Total Number Of Rows In Gridview

Apr 8, 2009

m using c# .net and oracledatabase with 3 tier architecture.

i want to find the total number of records in the entire gridview.

M sending the source code of my gridview and the method which i m using to display records in gridview.


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Binding A Fixed Number Of Rows To A Dropdown?

Dec 9, 2008

Suppose there is drop down list which bind first 20 rows from a table from database. then on a button click next 20 rows(means row no 21-40 from database) from the table will be bound & then again on the button click next 20 rows(row no 41-60) will be bound... like this. I need the answer in C# language.

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Web Forms :: How To Set Bullted List Number Of Rows

Nov 2, 2010

i have a bullted list and would like it to show only 5 values but it currently displays 10 how do i change that

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SQL Reporting :: Limit Number Of Matrix Rows?

Oct 27, 2009

I've got a report in SSRS 2000 that I'm having a bit of difficulty with. I'm pulling my data into a matrix and need to limit said matrix to 10 rows (not per page). Due to the grouping, I cannot simply use the TOP command in my SQL query. What I've done is set a filter on one of my row groups to show only the top 10 records, but to do this by counting (actually summing with an inline if) the records for each group. My result is something like this

Result 1 Subresult 1 20

Subresult 2 10

Total 30

Result 2 Subresult 1 25

Total 25

Result 3 Subresult 1 12

Subresult 2 5

Subresult 3 4

Total 21

As you can see, it is sorting by the total amounts and will only show the top 10 totals. The problem comes in when say what would be records 9, 10 and 11 normally all have the same total. What happens is instead of showing 10 records, since those last 3 have the same total, it doesn't know where to cut it off, so it just shows 11.

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