i have a project and i want to insert multiple rows into a single column and then display them into a single text box...
this is what I'm going for:
DATABASE: column 1
| column 2 | column 3
| column 4 |
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yes i know I've posted this in 3 different forums but no one seems to know either
I have an access table that I'm loading into a dataset, then I'm binding the dataset to a bindingsource. The bindingsource is the datasource for a datagridview. I can use a command builder to update the entire table, but I need to update all the rows (or changed rows) in specific columns. I have a column called "dPrint" which is Boolean. I'm not sure how to use the bindingsource as my datasource in an Update Command. I've tried this:
View 8 RepliesI can't seem to figure out how to update a single column for every row in my database...
con.Open()
Dim cmd As OleDbCommand
cmd.Connection = con
[code]....
What I'm looking to do is to update add a value to the given value already in the row. for instance:
id name value
1 peter 8
2 paul 10
3 mary 16.25
I just want to add a specific value to each row, such as "8"
id name value
1 peter 16
2 paul 18
3 mary 24.25
how to make a single column of a datagridview into currency format?
InventoryDataGridView.Columns(5).Name = "inventory_cost"
InventoryDataGridView.Columns(5).DataPropertyName = "inventory_cost"
InventoryDataGridView.Columns(5).Width = 70
InventoryDataGridView.Columns(5).HeaderText = "Cost"
InventoryDataGridView.Columns(5).???
I am filling datagridview with data from SQL server 2008 R2. one column is date which is stored in the data base as yyyy-mm-dd and when i retrieve it displays in the same format. I want to change the display to dd-MMM-yyyy.
Try
Connect_Design_Document_Record()
Dim cmdDrawing As New OleDbCommand("SELECT DRAWING_NO, DRAWING_DESCRIPTION, DRAWN_DATE, REVISION_NO" & _
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I am using datarepeater on my windows form to populate records from a temp table. I want to write query to insert records for an employee in a single row rather than multiple rows. For example: I am displaying records of one month only. so i know the definite number of columns. Normally if we use select * from Temp ' it will display and i can populate in a datagrid.
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[URL]
Basically here's what I want to do.
Input data
ID Item Name
1 Apple01,02,Banana01,02,03
2 Spoon1,2,Fork1,2,3,4
[Code]......
What iam trying to do is selecting rows on multiple column values. But the statement below doesn't preform like i thought it would...
Code:
Select Distinct Variable From TableName Where (ColumnA Like"%AAA%") And (ColumnA Like"%BBB%")
I am new to working with XML and have a question. I can recover any one value from an XML file but how do I recover 2 values from the same file and align them into a column format.
This is what I have been doing so far:
Dim doc As New System.Xml.XmlDocument
doc.Load("C:a_xmltestingDev_Clean.xml")
Dim list = doc.GetElementsByTagName("product") 'this returns the product ok
Dim list2 = doc.GetElementsByTagName("product_code") 'this returns the product code ok
I can pass either list into this and recover the values but not both
For Each item As System.Xml.XmlElement In list2
Debug.WriteLine(item.InnerText)
Next
Can I pass 2 GetElementsByTagName into a list?
How to delete multiple rows in a single table i used "truncate" command.
This is my code for deleting:
Private Sub tranc()
Try
Dim dbconn As OleDbConnection
Dim dbcom As New OleDbCommand
dbconn = New OleDbConnection(cnnstring())
[CODE]...
I used access database on it. when i run my prog. i got this error "Invalid SQL statement; expected 'delete','insert.... or 'update'.
I am trying to make a list, separated by a comma, of entries from a single column in a SQL database. I have been spending the last several days searching for a way to do this, but every thing I found either didn't work, or wasn't exactly what I was looking for.
The query will pull all the email address that are not null. What I need to know is how to take the result of that query and make it look like this:
email0@address.com, email1@address.com, email2@address.com, etc, etc, ...
I feel like I should know this, but for the life of me, I can't remember nor can I find it in any of the textbooks I have.
I am using Visual Basic 2010 and SQL Server 2005. I also have access to Visual Basic 2005 if needed.
Say I have a code with 3 methods that do some pretty intensive work. Would executing these methods on 3 seperate threads be faster then executing them one after the other on a single core cpu? And what if it's a dual core or HT?
View 8 RepliesI have three sub tables that I want to process. For each I want to combine the rows, as they are only different by contents in the second column(I want to do the same to the fourth column, later):
'Sub table 1
xx|C201 |02300877 |Samsung |....
xx|C201 |02300877 |Toshiba |....
xx|C213 |02300877 |Samsung
[code]....
p.s. For the fourth column, Manufacturer information , I want to do the same and I'd probably get something like this for the final table:
xx| C201,C213,C606,C619 |02300877 | Samsung
xx| C201,C213,C606,C619 |02300877 | Toshiba
xx| C303, C305,C712 |02301163
xx| C207, C209, C708 |02301165
I am looking for a howto or someone expert in ADO.NET who can explain me how to properly solve the following scenario:I have two datatables in a dataset:
ParentTable (ParentID, Name) for user data ChildTable (ParentID, ActivityID, ...) for schedule data
Tables are linked together at the database level by ParentID which is an Identity column in ParentTable.
Both tables are data bound to a separate DataGridView on the GUI. There supposed to be a "1 parent/N children" relationship between the tables, meaning if I create a new entry in the ParentTable (a new user) I get a clean DataGrid in the child grid to type schedule data for the user. So I setup two DataAdapters for each table to fill their result into a DataSet. I also set up a DataRelation object and assign it to the DataSet to link the two tables by their ParentID columns. Also when I add a row into the ChildTable via DataGrid I use SetParentRow to set the parent row.
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format Gridview's unbound column in 12hr format? i tried the following code, it didnt work.
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I have a DGV that is getting data from a sql db. The dates in this db are stored as doubles ie 40025.708681
How do I format this column as Date/Time?
I tried but this doesn't seem to work.
how to do this? DGV1.Columns("HostDate").DefaultCellStyle.Format = "d"
i have a datagridview with three columns. i set the first column to visible=false, so the user can only see two columns.when the user presses the tab key in the first visible column -- column(1), i want to ignore column(2) so that the user only tabs through the rows in column(1)i can't get it to work. it will always tabs through the rows in column(2) even if i use the column name.
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I have a datagridview, and I want to get an array of rows, or rows indexes in which boolean column "Aktywny" is set to True.Obviously I can Do it using loop, but LINQ will be much faster for sure...
View 1 RepliesI have a DataSet that contains 1 DataTable, and the DataTable contains only 1 row of data. I want to loop through all columns in that row and say:
Column name = column value
so for example if the column name is FAVORITE_FOOD and the value is pizza, I should display FAVORITE_FOOD = pizza I can get the column name from column.ColumnName and the value from Rows(0).Item(0), but for the life of me I can't put it all together in a simple loop.
I have a vb.net web application and when a particular function runs , i get data timeouts in the rest of the application..(ie..row not found errors or column does not belong to table but it does) The function is adding multiple rows in multiple tables in the database and is running in a for loop. It seems to be all SQL related but I am not seeing anything in the error logs in SQL or in the application Right now I am assuming it is memory related where to start note..the for loop will be replaced with a bulk insert but right now I jest need to resolve the issue of the timeouts
View 1 Repliesvisual basic 2008 express
access 2007 db
I am attempting to fill a form with multiple rows from an access table based off of a parameterized query. My query works fine but I don't want to return one row at a time, I want to return all rows that match my query in multiple text boxes. I know that I can use a datagrid view to accomplish this, but I would prefer the look of a textboxes on a form. I have read through many books and searched the internet forums but think I may just not know what to search for as nothing has worked yet. Can anyone point me in the right direction. So far I have tried setting the text box value to the row().item(), creating a different dataset for each row, and even setting variables for the results of the query to then be passed to the text boxes. Since none of this work, I don't really have any starting code to post. If I could just get a starting point I could work from there, so don't feel the need to code anything for me, just set me in the right direction.
i see that i can use defaultcellstyle.format to format a column but what if i have an number stored as a string "0511" and i want to display it as a integer "511"
View 6 RepliesFirst, a little background (greatly simplified): I have two classes, one called Entity and one called Item which a subclass of Entity. They each store their individual properties in seperate SQL 2008 tables using TableAdapters generated by a strongly typed DataSet. The Entity class has a Save() method that looks like this:
Public Sub Save()
entityTableAdapter.Update(entityRow)
End Sub
[Code]....
Indeed, the SQL table does not contain a row in the Entity table with the necessary ID at this point because the transaction is not complete.
My goal is to prevent the Entity record from being inserted if inserting the Item record fails. I could write code to delete the Entity record again, but this does not seem very elegant to me...
While searching on how to escape a single quote in String.Format, I found the answer at SO: Escaping single quote in String.Format(). It seems to be different for VB though. I tested it, and indeed C# needs
string s = DateTime.Now.ToString("MMM d \'yy 'at' H:mmm");
while VB needs
Dim s As String = Now.ToString("MMM d 'yy 'at' H:mmm")
Why does C# need a double backslash, and VB a single backslash? This might be a bit of a silly question to C# users, but while I can read C#, I'm not used to writing it.
Is a VisualBasic 4-byte single precision floating point variable the same format as Visual-C++ float?
I need to send floating point values from an embedded PowerPC written in gcc C++ to a VisualBasic GUI,and want to first test it by simulating the embedded using Visual-C++.software developer
Can you set a condition inside the string.format parameter.So if i have
string.format("{0}" , if x = 7 then return "SEVEN" else return "ZERO")
Is there a way of doing this?
Add persistence to multible DataGridView in terms of Hide/Show column and column width
View 1 RepliesThis the test example.
Dim dt As DataTable = New DataTabledt.Columns.Add("StartTime")dt.Columns(0).DataType = System.Type.GetType("System.TimeSpan")
[code]....
I am trying the following to select a long date, but becase the value is stored in SQL database as DateTime I am unable to return any results unless minutes and seconds match perfectly...I then tried to use 2 calendars and have the same issue with the DateTime format..
CODE:
I am looking for the code to consolidate multiple .xls sheets from within multiple work books in a file all containing the same format of information. Each sheet needs to be coppied to a new sheet within a single work book.
Once in a single sheet I need to then copy data from a range of fields into one consolidated sheet.