I want a Database read only and shown up in a datagridveiw without the user being able to edit the data into a certain column.Example i have a Database:
*In my Column is "ID","Name"
*Then in my Rows is "Ryan",Mark"
How can i display these data into in datagridveiw.....Cause i want to create a displaying records in datagridveiw..
I am exporting a datagridveiw to excel, this works fine. As of now there are columns and headers that i needed to add to the excel data that did not exist in the datagridveiw. This also works fine, the data is held in cells a2:f2, now i want to take this data in these columns and filldown to the last filled row of the excel sheet. In this example lets say i have 49 rows of information, i want to take a2:f2 and copy it down to the 49 row of the excel form. Below is the entire code of the export process, i have noted where i need this code to go with , i am not sure if i should just use a for loop, which i have tried to no avail.
[Code]...
I have an DataGridWeiw as an result table for a little racing game.The grid is sorting itself everytime a new value is added in a "points" column using the following code. TableDG.Sort(Column2, System.ComponentModel.ListSortDirection.Descending)
And it works fine as long as "points" not exeed 9. eg: I want the datagrid to sort "10" or above as greater than 9. Not putting the "10" or above last in the list?How can i do that?
And is there any way to get rid of the "grey" marked first row?
how to use datagridview and why and when we use adaptor and data reader
View 1 Repliesbuilder("Provider") = "Microsoft.Jet.OLEDB.4.0"
builder("Data Source") = IO.Path.GetDirectoryName(Me.OpenFileDialog1.FileName)
builder("extended properties") = "text;HDR=Yes;FMT=Delimited;"
I am using this to connect to a textfile database, but ti wont read over 256 columns like excel. Is there any kind of work around short of changing my database file which isnt an option
I'm trying to read in only the first 2 columns of a txt file into 2 lists but am having problems getting the split function working. When I read the file the first strfields = "5.000 300.000" and the second strfield falls over.
Samples text:
0.000 300.000
5.000 300.000
10.000 300.000
[Code].....
Essentially my program asks the user for their name and a number, and it stores both values in a text file. However, when retrieving the code from a particular line it cannot separate the number from the person's name.will I have to use a new line for every entry, or is there some way to tell my program to differentiate between columns in the code?
[code]....
i\m trying to do an application that read a text file that contains 2 columns of numbers and put it in 2 columns in a table
View 6 RepliesI receive this error using the following code when the executeNonquery() line I am trying to load data from refnum to a column in the table
The variable name '@refnum' has already been declared. Variable names must be unique within a query batch or stored procedure.[code]...
Reading Excel in .NET - some columns are read in as null
View 10 RepliesI am reading a record from a database into a datagridview.I have changed the column "ComputerAwareness" from a textbox column to a combobox column.This column is at the 21st position in the database but after changing it to a combobox in datagridview it is diplayed as the first column in the datagridview.How can I keep the position of this column same as in the database?I have googled a lot for the solution and tried all the possible ways but none seem to work.One of the ways I tried is in the code below.
Private Sub DisplayButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DisplayButton.Click
Dim cs As String = "Provider=Microsoft.ACE.OLEDB.12.0 ;Data Source=C:\Users
[Code].....
The LINQ VB code below is to read the first record data for database table
ProductTable that has 3 colounms (or 3 fields):
TableCol1, TableCol2, TableCol3. The reading data is stored at variable
MyArrayFirstRow.
'-------start LINQ VB code in Visual Studio Web Developer 2008-------'
Dim MyArrayFirstRow
[Code].....
How do I open, edit, read excel columns in vb.net? Like, for example, I want to know the values of column B up to the cell that it contains values.
View 1 RepliesDataset's ReadXML() method would read an XML document. But how would we skip certain columns? [Code] So, if I use ReadXML(), it would read the whole document and the dataTable would have "id" column, "name" column and "price" column. But I want to have only "id" and "name" column. How can I skip certain columns from reading it?
View 3 RepliesHow to change the font color of the column header text in my datagridview if the entire column is read-only. I basically use a loop to add columns to my datagridview and then set the properties of the columns. But for some reason setting the DefaultCellStyle.ForeColor and HeaderCell.Style.ForeColor properties does not work. The header text is still black.[code]...
View 3 Replieshow can i import text from text file to access so that:
Text sample:
F2009021908362600111154050110230000203024116461000000000001000
Would be in access
Col1|Col2|Col3|Col4|Col5 and so on.
F|2009|02|19|08
So the point is, how can i put vb to read from left as many characters i want and put the selected range in to access?
I'm using VB.net 2005. I have working programs that I populate DataGridViews with something like the following:
[Code]...
My goal is to connect to my database either manually or using an sqladapater, and get information from two of my databases on sql server 2005. Then I want to take this information and on run-time begin to add/subtract/divide/multiply certain columns and place the information into other columns. I can do this in queries, however, I want to do it on run-time what is the best way to achieve this.I had some of this working, but I just want to start fresh and see how you would go about doing this.
[Code]...
I have the below Linq query that is returning the data but I need to aggregate the columns to group on the Period and Sum the Count columns. How do I go about doing this?
LINQ
from t In tblTimes
join h In tblEngineeringDashboard_CADMachinesCounts on t.ID Equals h.TimeID
Order By t.Period
[code].....
I am using the following code to alter an table imported from an Excel spreadsheet
Dim SQL As String = "ALTER TABLE receipts ADD payee integer, account integer, category integer, reconciled boolean"
Dim dataread As New OleDb.OleDbCommand()
dataread.Connection = Connection1
[code]....
Both ExecuteNonQuery() actions yields the exception message {"Syntax error in field definition."}The error message does not happen with the first if the boolean column is not there (I tried Tes/No as a definition - but that also failed.The second query to modify the ID column from autonumber to integer I assume fails because it is a Primary KeyHas?
Imagine the following scene: I have one table which have tree columns (ID, Number, Name).
A Select query result on this:
code:
Now, the user deletes the Number 3 and 4. So, now the Select query is going to be:
code:
And I want to have:
code:
How can I organize the column?
I've the following code which successfully makes an average for all the columns from a table. What I need to do though is ignore certain columns in this equation.
Dim totalNumber as Double = 0
Dim count as Integer = 0
For x = 0 To xyz123.Tables(0).Columns.Count - 1
[Code]....
Averaging columns in a table - ignoring certain columns
View 2 RepliesWhat should I use and how to use something that functions like a label box but can handle several columns and columns? Something that looks like this. [code] Name | Age | Birthday are headers and the letters are variables
View 5 RepliesI've got a gridview with two buttons in it. I would like to determine which button has been pressed in my VB code. Is this possible? I've been able to determine which row number has been pressed, or what the value of the first element in the row is, but columns don't seem as easy.
View 14 RepliesI can filter BindingSource base on 2 columns. Example data starting with "s" in column A & column B must be filtered.
View 5 RepliesI've got a question about Listboxes in Visual Basic 2008 Express. I have a fair bit of experience with Office (both 2003 and 2007) and use the listbox in office all the time. The thing I like most about it is the ability to set the number of columns so I can have a string for the user to see and a second column of 0 width that holds my ref number.
So when I needed to do the same thing in VB 2008 Express I grabed the Listbox control and.....hit a brick wall. As far as I can find out from the help files and searching the web the Listbox control only shows one column really. Ok so it might wrap to a second column to save the user having to scroll but its still basically one column. There seems to be no way of having something like in Office.
I know I have no code, but I don't have any code for this. I'm just asking in case I'm missing a control or something obvious. Hell at this point I'm almost tempted to create my own Listbox control that acts the way I need but thought I'd ask before heading down that route.
I am writing to a txt file from vb.net. I cant write 2 columns of data and have the 2nd col start at same place. Col1 is OK but col2 starts at different places depending on how big col1 ,row data is. How do I force this as currently I use tabs but again this doesn't work.
Private Sub write_file()
w = File.AppendText(filename)
eqNo += 1
count += 1
If count > 2 Then '2nd col
w.WriteLine()
[Code] .....
I am Working Windows Appl .Net08.My DB is Access Db.The below image is from Access DB only.In the image the table called Contacts having one of the column called 'ContactMedium'. In this Column having values like 'Mobile' , 'email'.Now i want to saperate these values and create new columns in the same table.How can make these values as a new columns ?If i create Crosstab Query it giving error like Value type is not Aggr.
View 12 RepliesI want to add more than one column to a grid...The following does NOT work, how can i do it?
Dim AmountRounds As Integer
DataGridView1.ColumnCount = Amount + 2
Dim contcolumn As New DataGridViewTextBoxColumn
For AmountRounds = 1 To Amount - 1
[code]....
