Retrieve The Data From A Specific Row And Column From A DataSet?
Aug 19, 2009
I know this has to be a very simple answer but I seem to be overlooking it. I have an Access database that I have conected to and have created a DataSet. The DataSet consists of one table with several rows and a bunch of columns. What I am trying to do is get the data for one specific row and column so that I can use this data is some calculations. I can position the row if I need to but I can't figure out how to get the data in the specific column I need.
I have a gridview loaded with data from my database and a gridview swapping function which after exchanging data between rows with a column call "Priority", I want to save these changes back to my database. Only the "Priority" column value will be change, how do I update only that Column of my dataset table to my SQL database?
I do encounter interest problem when I am using VBNet2008 and SQL Server 2000. I am developing Window Application and one of the form I am using SQL String with Date between to retrieve specific data from SQL SERVER 2000 Table and it's not working and generated this error message: Invalid column name strFromDate Invalid column name strToDate
Here are the overall coding: Dim sqlconn As SqlConnection Dim sqlcmd As SqlCommand Dim DA As SqlDataAdapter Dim DR As SqlDataReader [Code] .....
I have used .NET and ShDocVw for years to grab data off webpages without any issues I couldn't overcome. This website has me beat though. It seems like such as easy task to grab the titles and other information off a library search page, but I can't see the data to be able to grab it. Usually, I just look in the DOM, but the data wasn't there. I did a view source, but the data wasn't there.
I have inherited some code from an external contractor that I have to modify. Firstly, he uses a strongly typed dataset to retrieve some data from an SQL database and then uses that data to populate a listbox. I have decided to use a dropdown list (as the user can only ever select one value at a time).This is the code that populates the DropDownList
Private Sub FillUserComputer(ByVal userId As String) Try TraceDebug("Begin FillUserComputer"[code]....
This works well for the first two entries in the DropDownList. However, whenever I select one of the other options and click the Send Request button it "jumps back" to the 2nd entry in the list and sends that data instead, completely ignoring the option I selected.I think I have narrowed down the problem to the fact that the DataValue for the second entry in the list is a Null value.
At moment iam getting information back by fireing a command to an API function of a program (http) after that it gives me databack and i transfer that data in a dataset. so far so good its working great.
But now i want to have specific data out of that dataset....
i know the rows got names inside the DS one is ID NAME and TYPE
What i want to know is there a way to get TYPE out of the Dataset WHERE name is .... (does not mather what name)
Error 1 Too many arguments to 'Public Overridable Overloads Function FillBySID(dataTable As Student_DatabaseDataSet.Student_DatabaseDataTable) As Integer'
I am trying to retrieve data from one column of my database.
here is my code
Me.Student_DatabaseTableAdapter.FillBySID(Me.Student_DatabaseDataSet.Student_Database, SID) Error 1 Too many arguments to 'Public Overridable Overloads Function FillBySID(dataTable As Student_DatabaseDataSet.Student_DatabaseDataTable) As Integer'
I am using VB express 2008 with MS-Access as database.How i can retrieve data from a table having a column containing checkboxes on the base of Checkboxes checked or unchecked. Column PAID is having checkboxes.[code]...
I'm doing a simple database thru VS2008 and Msaccess without using any builtin relationship between records, now i need to know how i can retrieve specific data from access using the oledbadapter or any, example seek if the value from the textbox1.text is already existing in msaccess table then msgbox "Record already exists.", note that the code is in keypress event of the textbox1.
Iv've always done a loop like below to go through each row of my DataGridView..For Each row As DataGridViewRow In DataGridView1.Rows....Is there a way to specif a specific row and column that i want to get data from? I tried this below but didnt work
MessageBox.Show(dataGridView1.Rows[1].Cells[0].value) and MessageBox.Show(dataGridView1[0, 1].Value)
I want to insert/edit date automatically in the DateCreated column and the SystemUser column to track the date and user who entered ther details into a dataset. I am using data bindingsource to bind controls to the dataset
I am a beginner to VB.net. Still learning and have a lot to learn.I am confuse on dataset and binding source.I want to update the columns in the current dataset.
I have a listbox to reorder the sequence.Once those are reordered, the sequence number should be wrote back to the "Sequence" column in the dataset.
After pointing to the current row in the binding source, I don't know how to write back to the column.[code]...
I need to read data from an Excel sheet as part of a data conversion. Certain columns contain mostly numeric data but may contain some alphanumeric data somewhere in the excel sheet. The problem is, my conversion sees the alphanumeric values as null (or blank. Using the .ToString() method returns ""). To connect to Excel, I'm creating an oledb connection, creating an OleDbDataAdapter, then filling a DataSet with the adapter.
Here's the VB code for connecting: private _oleadpt As OleDbDataAdapter private _oleconnection As New OleDbConnection Dim olecomm As OleDbCommand '_database comes from a settings file and is the full path to an excel document Dim connstring As String = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & _database & "; Extended Properties=""Excel 8.0;HDR=YES;""" [Code] .....
I think the data adapter is determining the datatype for the columns based on the first however-many rows it looks at. It decides the columns with numbers are numeric which is the start of my problem. Changing the formatting of the column in Excel doesn't seem to affect the datatypes in my data set. Is there a way to tell the dataadapter or dataset what type of data to use for a column? Or should I try to cast the data in my SQL statement?
So I have a datagridview being populated with data from a database.At this point a user may or may not selected (via mouse click / key press) one or more rows within the datagridview.I need to (upon selection) create a new dataset, datatable and add rows with the some data from the said datagridview.
For example, if a table had nothing but names, e.g.
Joe Sean Larry Chris
Upon the user clicking, dragging a selection over Sean and Larry to add those names to a new dataset so I can pass it to another method for further processing.
[Code]...
Input array is longer than the number of columns in this table.It looks like I'm either missing a column declaration or adding the table to the set?
I'm somewhat of a novice at VB.I have a DataGrid that I am manually populating from a SQL query-based dataset (see code below). Question: How do a capture the value of a specific column of the selected row (mouse click in the row) to use as a variable in other parts of the overall solution?Also, how do I add cell padding around the contents of the data grid cells?
I've made a dataset using the dataset designer, and I'm trying to add a column to reflect changes made to the database (added a column, nothing fancy). Is there a way to 'refresh' the dataset schema from the datasource without deleting my adapter (and all the methods and queries I've created)?
I have a program and I get time data from a sqldb and display it in a column in a listbox. What are the proper steps for adding the time as I iterate through the data in the column? I figure I will need to do some conversions on the time to be able to add it and display it as a total.
I'm writing a help application for the Customer support team at my company to help agents ask better questions when customers report problems. In it, I've got a SQL database that contains all the products, topics, and questions. The layout is similar to the following:
I don't know if I'm making myself clear, but I basically need to do the equivalent to the following SQL statement: "SELECT PRODUCT_ID FROM Products WHERE PRODUCT_Name = LstProducts.SelectedValue"
Is it possible to get the dataset name from an rdlc file? I have found several demonstations on how to get the datasource, but not the dataset nor the tabladapter.
Thought, but dont know if it is possible or not.
When you run your app. could you read the rdlc as an XML file?
Having a bit of block trying to get comments for a specific post. Working with MVC 3 and VBNET. A post url looks like /Blog/Post/1. I can display the post without problem but need to get the comments for PostId=1 from the Comments table. I tried a Linq inner join statement
Dim results = From P In _rdsqlconn.Posts Where P.PostId = id Join c In _rdsqlconn.Comments On P.PostId Equals c.PostId Select P Public Class RDSQLConn
[Code]....
However a SQL query such as the one below works just fine. Can i just pass in this sql statement to my EF?
Select * From Posts INNER JOIN Comments on dbo.Posts.PostId = Comments.PostId where dbo.Posts.PostId = 1
