Possible To Find Row Count Of A Table Using Data Reader
Dec 24, 2010is it possible to find row count of a table using data reader?
View 3 Repliesis it possible to find row count of a table using data reader?
View 3 RepliesI have a data table called Songs It has SongId as Primary Key of type INT SongName of Type VarChar UserId of Type Int. I simply want to check how many entries are in the Table already by The UserId before they insert more. So If there are already 3 songs by that User, I want to stop the insert process and warn them they have the maxium already. I think i am halfway there already using code below but problem is that UserId is of Type GUID, and not Int so I am missing something. On my Aspx, Page, I have a DetailsView for the Database Insert. I also have the following code using BusLogic Layer and DAL
SongsBLL
public int ScalarQuery(Guid ArtistId)
{
int returnValue = ScalarQuery(ArtistId);
return returnValue;
}
Code Behind ASPX page
This in in DetailsView_ Item Inserting Event
SongsBLL number = new SongsBLL();
currentCount = Convert.ToInt32(number.ScalarQuery(currentCount).ToString());..........
I'm making the leap from using all the 'wizards' that are built into VS, and have been doing more with code-behinds. But, I'm curious as to when/why I should use a reader, versus a databable, table adaptor to "manage" the data returned from a stored procedure. Typically, the data is to be displayed on a webpage, and not written back to the database. What's the difference? When should I use one over another?
View 2 RepliesI have sending messaged details in my sql data base.In my Grid view have the following columns,
Name Rollno MsgTemplateName No of messages Sent
Ameer 1 Pongal
Robina 2 Diwali
Ameer 1 Pongal
Robina 2 Diwali
Ameer 1 Diwali
Robina 2 Pongal
I want to look like the follwing,
Name Rollno MsgTemplateName No of messages Sent
Ameer 1 Pongal 2
Diwali 1
Robina 2 Diwali 2
Pongal 1
I am using this sql query "Select name,rollno,tempname,count(*) from stumsg group by name,rollno,tempname"
I have some code in my vb.net code behind that queries a database, and if there is data, outputs it from the codebehind to a datalist on my asp.net page. In addition to sending the data to the datalist on the page, I need to take the value from "mbillaty" that is returned from the sql query, and have that value be the selected value for a drop down box also on the page. I can get either the datalist to fill, or the selected value for the dropdown box to be selected depending upon which bit of code I place before the other (ARGH), but I can't get them to both work together on the page. What am I doing wrong?
[Code]....
I have been able to successfully read a row of data from an SQL table using two column parameters. Now I would like to update this row with new information. Is this possible since the reader does not specify which row was read with the 'reader.Read();' command?
View 7 RepliesI have
Chart1["Series1"]
Chart1["Series2"] ....
It has multiple Series and each series has Several Data points.I want to find the count ( not sum but number of datapoints ) of Data points in all the series using LINQ.Currently i do
var count = from s in Chart1.Series
select new int[] { s.Points.Count };
And then for each thorough count and find the sum. Is there a better way to do this
I tried so much working with this to get distinct Words and their count. I'm using ASP.NET 2.0. And i also googled so much.
1)Ex(String): The DOTNET is Very Cool! The Best.
2) Capture all the sequences like Space, FullStop, Question Mark, Exclamation, Apostrophe, New Line....(May be with RegEx?)
3)Split Words According to the above sequences
4)Get Distinct Words(Occurences) and their count based on the input string in 1st statement.
Desired O/P:
The - 2
DOTNET - 1
Is - 1
Very - 1
Cool - 1
Best - 1
This is my Sample Code for your Ref.
[Code]....
In the GridView_RowUpdated event the e.OldValues.count <> e.NewValues.Count. 1 out of 5 columns has been converted to a template field.
View 9 RepliesWhen 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.
[Code]....
I HAVE A GRID VIEW IN asp.net + VB Code. There is a drop down list and the selected data is displayed in web page. I placed a label in web page and code behind i used following code.
Protected Sub GridView1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.DataBound
Label1.Text = GridView1.Rows.Count.ToString()
Dim ONYO As Integer = 0
Dim DONE As Integer = 0
For i As Integer = 0 To GridView1.Rows.Count - 1
If GridView1.Rows(i).Cells(0).Text = "ON YO" Then
[Code] .....
Below Error I getting Some Time Only once refresh the page its working ? System.IndexOutOfRangeException: Cannot find table 0.My live server database stored large data ,i can improve my application efficient.
View 1 RepliesI need to get count down for a reason in vs.net 2005. in my vs i cant find timer controle in toolbox as well as in the component list.
i tried with any other pc i got that timer control on it on trhe other hand that timer_tick is not fired in that .
where can i find the tableadapeter to add data to my database table? and is that the best way or there a easier way... i have a csv file that i would like to add to my data table but i don't know how?
View 1 RepliesI have a dataset with the following values:
NAME, NUMBER
Test3, 1
Test2, 2
Test3, 3
I am basically need the ability to do something like dataset.tables(0).row( ' here i would be like where item("NAME") = "Test2" ' ).Item("NUMBER")
create a website, it shows the count of the table in C#?he webpage looks like below: Pending: 45
View 7 Repliesmy table has already 5 rows...after pressing addow, rows are added dynamically to another table... i need to save the data of all the rows(5+newly added) in the database...
View 2 RepliesIm looking for a sql solution for counting records in a bridge table. I want to select all in table1 and add a column with count of each author's titles. Ive tried
SELCET Table1(*), COUNT(DISTINCT table.au_id) AS Titles
but keep getting an error.
The tables I have are as follows:
Table1(
au_id
au_fname
au_lname
ect..)
Table2(
au_id
title_id)
Table3(
title_id
title_name)
How to return count of true/ false in a column of a table. I have a table in sql containing 5 columns with bollean type. Now I have to return the number of trues and falses in each column and display on my frontend.
View 1 RepliesI want to get record count from below example.
I made two tables. One is club_info and another one is club_members.
And each table has data like following
[club_info]
club_id
club_name
:
[club_members]
mem_id
club_id
:
I want to get club_name and the member count for selected club_id and want to return the result as sqldatareader.
i need to create 2 temporary tables.The records inserted into the 2nd table is the same as that from table1.
Now, i am inserting some other records into table 2.what i need is, to retrieve the count of the recently added records into table2.How to achieve this?
I want to display no. of rows a table contain from database on label, how can i do that..
View 1 RepliesI have 2 table's
Table 1: Daily_item
Fields: Key_Guid Drescription Count
1 test 3
3 new item 2
I want to insert records form table 1 into table 2 but using the count field to duplicate the Key_guid record the new table.
New table example:
Table 2
Key_guid
1
1
1
3
3
I would like to dropdown box to show only starting from second row of the table. How to use data reader to do it?
View 9 RepliesI am trying to send session on Loop and trying get .
[code]....
In above code, I just only get same SessionId on every news headings, how do I get next row session id?