I am not getting any errors. But the update query is not executed as it does not change the database.
Dim cmd3 As New SqlCommand
cmd3.Connection = con
cmd3.CommandType = CommandType.Text
cmd3.CommandText = "SELECT * from table 1 join table 2 WHERE (EXP_RETURN_DATE < GETDATE())"
cmd3.ExecuteNonQuery()
[Code] .....
How to use this query to update record [code]....
View 1 Replies[code]The query executes fine but the problem is that when this query executes, it doesn't update the percentage field. What might be the problem?
View 2 RepliesI'm using the following update method.. I'd like to be able to update the value of a checkbox into the existing query if possible. how to do this the correct way?
Public Shared Function SaveMemo() As String
Dim sConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and Settingsdiw07My DocumentsDaily Backupsphone memo backend.mdb"
[Code]....
I want to know how to Update / delete the table records in ASPNETDB.MDF in single update / delete query ?
View 1 RepliesHere's my query dim areas = From job In db.jobs Join area In db.areas
On area.JobID Equals job.JobID
Where job.JobID = id
Select area.Area, area.UnitID
I have two controls in my form
2 textboxes: tbArea1 and tbArea2
2 comboboxes: cbArea1Units and cbArea2Units
I've traditionally used a ForEach loop to cycle through LINQ to SQL results, but this instance doesn't seem to work. By design in the database, the result will always only return up to two possible areas, but no more then that. How can I populate the textboxes and set the SelectedValue of the comboboxes to something like this?
[Code]...
I intended to do another SQL query inside here and retrieve data from another table by using the "category_id".I know the problems that asp.net required me to close the data reader before proceed to another query. But is there any solution for me to do another query and open another data reader within the opening data reader? [code]
View 2 RepliesI am having trouble using FOR loop with array in query.What I am trying to do is for all the data pulled out of database I convert it to an array list and then string (this works fine). After that I am trying to make a FOR loop query for each of the data pulled out and this is where i am having trouble.
[Code]...
in the program im trying to make i have a button that when clicked starts a fairly lengthly loop, takes a couple minutes to complete. while this is happening im trying to send the an update of the loops progress to a listbox i have setup. Unfortunately these updates dont make it to the list box until the loop is finished, ive tried this with a few different types (progress bar/ rich text box etc). i cant seem to get any form changes through while the loop is in progress.
Is there some option or event thing i need to specify to be able to make changes to the form while in a loop?
I have a program which I'm designing to help organize and move some of my music around. I can create a play list and then add music to it, when I do this it copies the mp3 files to a specified folder and also updates a listbox with the content of that folder.
The code works, however when I run it the program locks up until everything has been copied, the listbox goes from blank at the start to suddenly showing the whole list.[code]...
I have a MySQL database with a table called "Locations" which looks a bit like this
id | name | other parameters
1 | shop1 | blah
2 | shop2 | blah
[Code]....
This works, but it is inefficient calling the database through the loop, how do I avoid this?
I wanted to update a column in my table, i have written the code it runs fine without any error also it displays the confirmation dialog box but the table is not updated whats wrong with the code.
Dim sqlConn As New SqlClient.SqlConnection
sqlConn.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|housingsociety.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
[code]....
I have a list box where the user can add choices depending on what items they want active in the database but I cannot figure out how loop through this listbox to update the items.
Visual Studio 2010
Dim lstitem As String
For i = 1 To ListBox1.Items.Count()
[Code]....
Is there a way to change the text of a label using for loop. I mean if i have labels namely "label1", "label2", "label3" and so on. [code]...
View 3 RepliesProtected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim s As New Staff
[Code]....
Basically I am trying to update each record with 2 random numbers each time the button was clicked,my problem now is, the system will update the record but the data was wrong. Example, by right all data should be different (randomly string) but for some row it was updated with same data but in randomly, something row1 row2 row3 has exactly same data for column 1 and 2 then row 3 has distinct data, second time, row1 row2 same data row3 ro4 with different data. It is in random sequence. When I add a MsgBox to do testing in the For loop the data was updated correctly with all different data.
I have a form with a tab control, containing a small number of tab pages. I'm writing a sub procedure to clear the controls within a groupbox for the selected tab. A selected tab will only ever contain ONE groupbox and within a groupbox will be command buttons, labels, text boxes and possibly a combobox. The first block of code below firstly finds the groupbox within the selected tab. The next part loops around all control type and if of type texbox clears the text.
Now hears the head scratcher/confusion it error's with :-
Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.GroupBox
Which I don't understand as I cant see where Im converting objects simply looping through all controls and then ONLY if type of control is textbox then clear text.
'Loop around all controls in form, simplified that all controls
'are within a SINGLE groupbox and clear contents or reset to default value
Dim groupbox = (From grpbx In tabAdmin.SelectedTab.Controls _
Select grpbx = DirectCast(grpbx, GroupBox) _
Where TypeOf grpbx Is GroupBox)
[Code] .....
I have a method in a webservice that has parameter with which users can decide how they want to order their results. This is a List(Of String) with the names of the fields in the order they want to sort them. I know I can normally order on multiple columns by doing the following
Dim test = Bars.OrderBy(Function(x) x.Foo) _
.ThenBy(Function(x) x.Bar) _
.ThenBy(Function(x) x.Test)
However in this case this won't work since I can't chain the ThenBy function because I'm adding the sorting orders in a loop. To use ThenBy I need an IOrderedQueryable collection. This is how I would want it to work
Dim sortColumns = {"Foo", "Bar", "Test"}
Dim query = From b in Bars
For each column in sortColumns
Select Case column
Case "Foo"
query = query.Orderby(Function(x) x.Foo)
[Code] .....
I'm trying to find a way where i can make it loop through the results of my capture group regex query.
For instance if i have this:
VB.NET
Dim matches = Regex.Matches("<h1><span>test</span></h1>", "(?<=<h1>(<span>)?)(?<data>.+)(?=(</span>)?</h1>)")For Each item In matches.OfType(Of Match)()Console.WriteLine(item.Value)Next
And i'm trying to get the contents of <data>, how do i do it without it printing out the junk before it and after it?
quantifier isn't working, its supposed to make the <span> tag optional in the query, but it isn't.
I'm creating a form application using vb. I'm still new to this and I'm teaching myself via the internet so please don't be too mean. I wrote my code using queries that I created in visual studio. I don't quite remember how to create an update query and write the code to update different datagrids. I tried searching the forums, and I can't find anything that fits into the way I wrote my code. I have an update button that I want to use to save all the edited data in the form. Here's my code so far:
Public Class Form1
Private Sub Blsys_systemsBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Me.Validate()
Me.Blsys_systemsBindingSource.EndEdit()
[code]....
I am having a bit of a problem with a query and I have google around and I still haven't find out a solution.I have an update query, but when it is executed I get a Syntax error in UPDATE statement.
[Code]...
i have a query that when i updating my database it doesnot take *,&,-,#,@ all these,but when add a new database its taking all above i have fields of roll#,Sname,Age and address?
View 1 RepliesI need to run a query when I add/Change a value in my first column in a datagridview. When I add a value (a identifier from a table) in my first column, then I need the query to retrive the rest of the values in the table recordset. When I try to run a query, all i get is a query that updates my whole datagridview, and not only one row, with this code in the CellValueChanged module of the datagridview:
Me.myTableTableAdapter.FillBymyQuery(Me.myDatabaseDataSet.myTable, CType(DataGridView1.CurrentRow.Cells(0).Value, Integer))
Is there anyone who knows what I have to do, so I can add several rows to my datagridview, and let a query retrive my recordset based on my value in the first datagridview column?
I COMPLETELY understand how redundant this is but I NEED it.Upon users creating a User account which only contains the ID, Username, Password and CustomerID I must also have a record in Customers create itself but null everything and the User.User_Customer_ID must update to the newly created Customer.Customer_ID
I have everything working but this pesky update query. The ONLY thing it needs to do is change User.User_Customer_ID to Customer.Customer_ID I managed to story the User.User_ID in an integer called UserID and Customer.Customer_ID in an integer called CustomerID I have tried a million different ways with no success
[Code]...
On an SQL query I have. I have the select query working fine but according to the result I need to set the column of a table to 0. I have the following Select query:
CODE:
So where the CommissionCalculator SetUp > 0 I want it to Update the CommissionStructure SetUp column to 0. I was thinking I might need an IF statement but I dont know how to work with them in SQL.
I am having issues with an update query.
i normally use SQL 2005 but for this project i am using an access 2007 database
[code]...
I have an sqlserver 2000 database and i am able to add records and read from it but i cant modify existing records. My test table just hav user_id,Name, , Phone and State for columns.
updateSql = "UPDATE student " & _
"SET name = '" & Me.TextBox2.Text & "' " & _
"WHERE User_id = '" + Me.TextBox1.Text + "'"
cmd = New SqlCommand(updateSql, cn)
cmd.ExecuteNonQuery()
I cant get my update command to actually do anything.
I have a datagrid which has a column called "tick". There is a button which will "ticked" all the the records in the datagrid so the user don't need to do it one by one.I have been reading MDSN but I am more confuse that before.my old vb6 code was:
On Error GoTo cmdTickAll_Click_Error
Me.MousePointer = vbHourglass
'Loop Through and Set all Ticks the Not Ticked[code].....
I created a new thread to run with a loop to update a textbox (this is just a demo, in reality this thing would go out to a db every x minutes to request an update). I did this on a timer, but i wanted to try to do it on a different thread.. anyways, this is what I have: (one form, one textbox, and this code...)[code]I'm getting a warning through (the "Thread.CurrentThread.Sleep(2000) part is underlined) which states:"Access of Shared Member, Constent Member, enum Member, or Nested Type through an instance; qualifying expression will not be evaluated".
View 5 RepliesI am working on trying to update a list of items to an Excel spreadsheet. I have created my own custom class called Songs and a List(Of Songs) that I want to update the spreadsheet with. It seems like everything is working -- I have even put in a debug msgbox that displays what Song it is currently on while iterating thru the loop -- but after the code iscomplete, I check the spreadsheet and only the first song in the list gets updated. I'm thinking it must have something to do with either the connection string or the parameters that prevents it from updating any other song records. BTW, there is no errors being tossed so it ats like it everything is being processed, just that the data doesn't change for the update inside the loop. Here is the section of
Private Sub btnProcessList_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnProcessList.Click
Dim adoConn As New Ole.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;data source='" & _
[code].....
My application is in VS2008 coded in VB.Net I have a DatagridView.I have a Save Button on my Form.Now my requirement is i want to the Data that is populated in Datagridview when i click on Save button. I want to do it using Update Query.
below is my code.
CODE:
I want to update only the Fourth Column in Datagrid.
CODE:
Im getting an error in the Query as End Of Statement Expected.This is the first time transacting using DatagridView.
