Sql - Query Excel Using ADO When A Column Name Is A Number
Feb 8, 2011
I am using VB.NET to query via SQL an Excel spreadsheet using ADO. The general way is like this: SELECT [firstname], [secondname] FROM [Sheet1$] Which works perfectly
However, one of the headings is called 3, so I want to do: SELECT [firstname], [secondname], [3] FROM [Sheet1$] However, this does not work. I know I can use * to get all columns, but later on I want to use (using dataReader): dr("3") which won't work
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Jul 19, 2011
In VB.NET, using Interop.Excel, I need to access a cell based on a row number and column letter. I tried my luck with...
pages.title = DirectCast(wksht.Cells(rows, "D"), Excel.Range).Value
Since the parameters took type object, I figured maybe this would work, but got no luck. I also thought of enumerating each letter to a number, but the columns in the spreadsheet aren't as normal. Meaning, they're not
A B C D E F G
They're actually...
A B C D E T AZ
I don't know if this makes a difference in the numbering of the columns. The question should be obvious, but just to reiterate, how can I get a cell based on a row number and column letter?
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May 24, 2012
Dim oApp As New Excel.Application
Dim oWBa As Excel.Workbook
oWBa = oApp.Workbooks.Open(excelFile)
[code]....
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May 26, 2011
VB.NET code to change Excel 2007 Column Cell Format from Text to a Number no Decimal.
Right now Column F shows values that look like
3E+13
3E+13
Manually changing it to a Number with No Decimal shows the correct value.
30000046605562
30000041582875
Of course I would like to automate this.
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Jun 8, 2011
I am Importing a Excelsheet(xls) in to my Application, but the date and Number column showing blank in dataset when comes to application. The values are there in Excel. Any other way to import the excel sheet to application, so that i should get all the values same as there in the excel sheet.
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Aug 11, 2010
I have a problem with a sql query. Through the query I am trying to search database for any occurrences of string (can be anything) in a column using the SQL LIKE command. The problem is that it works fine for most of the strings say john, jim, ji"m , but does not work when i include the following characters which are ( ' , { , } , and a single quotation mark). MYSQL query takes care of these special cases by putting them in [] block whenever user enters them .But i am getting the following error when i go to query the database using the GetSelectCommand() in VB.NET
Exception Details: System.ApplicationException: Number of values provided must be equal to the number of placeholders in query.I have checked the query over and over again .. but its fine .My database server is Sql Server 2008.So my application throws the exception in this command:
Using reader As MustDisposeDataReader = _
pmSystem.DatabaseManager.GetSelectCommand(selectStatementBuilder.ToString(), New Object() {})
Where MustDisposeDataReader is an instance of a class in an internally developed library, which inherits from System.Object. pmSystem is an instance of the class PlanManagerSystem which implements the commandlayer. GetSelectCommand() takes the select command
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Sep 5, 2010
I wrote a function to format numbers like this: 123456100,12 -> 123.456.100,12 (I have a function too, which converts numbers from this strings).Now, I have a dgv and a column with these numbers (or rather strings). The sort mode is set to automatic. If I sort the column, it doesn't work, because the values are not really numbers, but strings. But I get the same result (the sorting doesn't work), if I use the formatnumber function (this returns strings too).
I could use the programmatic sort mode and before sorting I format the strings to numbers, then sort the column, and then format the numbers like above. But this is a bit slow (the dgv has appr. 800 rows), and in this case, I haven't an arrow next to the column header text.is it possible to sort the column like a normal number-column with automatic sortmode?
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May 20, 2009
i need to do a macro. this is what my excel looks like
1 2 3 4
seq1 name name seq2
abcde vv1 abcdddd
abcxy vv2 abcdlmn
[code]....
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Apr 17, 2011
Is it possible to do the following rounding scheme?
36 = 40
37 = 40
38 = 40
[Code]...
I guess what I'm asking is if there's a way to find the value of the number in the ones column and tens column.
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Mar 2, 2012
I'm doing a notepad project, just because, and in Ms's notepad there is an option for a statusstrip. I'm just having probems getting the line number and I know it's not called column number, more like selection start. When I do the selection start, it works, just not how I want it to like so:
[CODE...]
but when I use that, it acts funny. I have it in my textbox's.keydown event. So if I were to use the arrow keys to navigate around text then it gets thrown off very easily. How would I do this?
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Jan 19, 2009
i Have this code which populates a number of combo boxes from an excel document, the problem is that it only populates the 1st three lines, does anyone know why this is??
[Code]...
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Aug 6, 2010
I am trying to create double and number format cells in excel using NPOI library. I used code like Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString)) In excel numbers are aligning right but when I check format it is showing in "General" then I changed my code to like below
[Code]...
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Sep 16, 2009
How to convert a number from an Excel text in an Excel Form
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Apr 20, 2011
I'm having a small issue, but somehow I simply don't see it.I'm trying to get a value from my database according my query:
[code]...
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Jun 25, 2010
This is my frist post on the forum So I hope I am giving enough info, If not let me know if there isanything I missed.I have currently completed a project where I do a Query in SQL Server 2000 in VB 2010 and produce reports for each Tax id. When I Debug the program it finds the number and processes the reports, when I just let it run as an executable it does not pick up or find the number.
This number happens to be the last number coming back from the query and it processess in a loop while Not filename.EOF it goes thru 4 seperate routines and then loops back to get the next taxid. I did not put any routines to sleep and I am thinking maybe the application is just stepping on itself, could this be right? Thecreatereport path does a sql execute for the appropriated Table against the TaxID an the current Cycledate, then produces the report va CR2010(beta) and exports it as a pdf file to a directory on the shared sever.
[Code]...
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Sep 25, 2010
I have A database in access2007 I want retrieve column names with sql query in my project I write below code: "select column_name from information_schema.columns where table_name ='table 1' ORDER BY ORDINAL_POSITION" but display error : Could not find file 'D:ProjectsTapco_ECMTapco_ECMTapco_ECMinDebuginformation_schema.mdb'.
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Nov 2, 2009
Dim MyQuery = From c In xdoc.Descendants() _
Where c.Attribute(OriginY) IsNot Nothing _
Order By Val(c.Attribute(OriginY).Value), Val(c.Attribute(OriginX).Value) _
Select c.Attribute(UniStr)
Right above you can see my First! linq attempt! And here comes my first question.
How can i select more than one column in a linq query in vb.net?
For example... Select c.Attribute(UniStr) AND c.Attribute(OriginY)
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Mar 30, 2009
The data type for my DATE column in SQL is smalldatetime. I want to perform a query which selects records based on the the selected date of a calendar object.
A user clicks on the date and the date is stored in ddlfilter2 DDLfilter2.Items.Add(CalendarMain.SelectedDate)
mystring = "SELECT * FROM view_main where date" & "='" & DDLFilter2.Text & "'"
produces this "select * from view_main where date='24/03/2009'
I then get an error saying "The conversion of char data type to smalldatetime data type resulted in an out-of-range smalldatetime value."
In the SQL database the data is displayed as "24/03/2009 00:00:00" is this why the query is failing?
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Aug 13, 2009
I am using a databound datagridview control. I created a custom query to fill the grid with which includes joins and using alias names in the sql query for the joined fields. Here is the query I am using:
SELECT Events.[Date], Events.[Time], Contacts.LastName AS Lastname, Contacts.FirstName AS Firstname
FROM (Events INNER JOIN
Contacts ON Events.ContactID = Contacts.ContactID)
The datagrid views fine using the columns that are in the events table. I want to be able to view the aliased columns from the contacts table in the datagridview as well.
How can I display the joined columns in the datagridview? Maybe there is a better way to do this? Maybe this is not enough information for a resolution.
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Jul 27, 2011
I have 3 textboxes and need to search differently for each of the textboxes. For example textbox1.text is searched in column ans1, textbox2.text is searched in column ans2 and textbox3.text search in column ans3 in table Answer. is there any sql query that can do the search in one button click event.
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Jan 4, 2012
I need to update a column by adding a value in Access:
update table1 set column1 = column1+value
In the above, if column1 is null, then the table is not updated.
I need a function like in SQL Server:
update table1 set column1 = isnull(column1,0) + value
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Apr 7, 2009
i have a small ListView in my form. The have only 2 Columns (Datum) and (Anzahl). When i fill the ListView the first Column is not filled, only the second Column (Anzahl) is filled with "Datum". How can i get the "Datum" in the Datum-Column?
Here is my code:
Dim selStr1 As String = "SELECT CONVERT(VARCHAR(10),datum,101) AS Datum, COUNT(*) AS Anzahl FROM stat11patienten WHERE datum BETWEEN '" & startdatum & "' AND '" & enddatum & "' GROUP BY CONVERT(VARCHAR(10),datum,101)"
Dim da1 As New SqlDataAdapter(selStr1, conn)
Dim ds1 As New DataSet()
[code]....
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Apr 3, 2010
I have a xml file that I know what line number the value is on. Right now I'm using a loop through, look for line number 5, when you find it do this. But it's slow. I was wondering if there was a way to say "take value from line 5", or something like that. can I query a xml file by line number?
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Jun 11, 2012
I want to query items from countries that are selected from a treeview (with checkboxes). However the number of countries that is selected by the user is not known beforehand. So how can I make a proper query when the number of OR operators is unknown? For example: SELECT DISTINCT Item FROM Countries WHERE Country LIKE @c1 OR @c2 OR @c3 etc� and then add the parameter values based on the selected countries in the treeview. I looked into parameter arrays but can�t make sense out of it really
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Jan 9, 2012
I am using a query in vb.net, database is Access. I need alias of query like sql but the query return me column alias and also ' '
SELECT COLUMN1 AS 'FIRST NAME'
I expect the result to be a field called FIRST NAME but it returns the string "FIRST NAME". Is there is any way if return me the field FIRST NAME instead of "FIRST NAME".
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Mar 19, 2010
I am using a modal form with a datagridview in order to populate textboxes on a parent form. The datagridview is bound to an anonymous type resulting from a linq query, which varies depending on the textbox control whose keypress event is called. I always want to display a key value in column 0 of the datagridview (along with a variable number of additional columns), and then use that key value once the user selects a row.
However, when setting an anonymous type from a linq query as the datasource for a datagridview control, the columns are indexed alphabetically rather than in the sequence selected in the query. This requires setting the displayindex as a workaround, and then keeping track of which column contains my key value. I read elsewhere that this was something fixed in VS2008 SP1, but I still encounter the behavior.
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Dec 12, 2011
I have DateTimePicker, and when I execute this procedure:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Me.TextBox1.Text = Me.DateTimePicker1.Value
sqltest = "SELECT * FROM Table " & _
"WHERE TOT_DATE = '" & Me.DateTimePicker1.Text & "'"
datest = New OleDb.OleDbDataAdapter(sqltest, con)
datest.Fill(dstest, "datepickertab")
Me.DataGridView1.DataSource = dstest.Tables(0)
End Sub
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May 6, 2011
i want to fill my datagridview column with sql query and data i have 1 datagridview in datagridview 4 column
column1 column2 column 3 column4
this gridview is undound
i want to fill with sql data
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Jun 28, 2011
I have this code:
[Code]...
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Sep 19, 2009
I have a dataset column that I am keeping comments in. If the row has no comment in it(defualt string value is "", not NULL), I don't want it to show up on my report. How can I fill only the datarows that have text in them and not the ones that are empty. I've tried to filter the columns results by Not Nothing, but everything shows up. I'm guessing because it's actually not NULL since the string is "". How can I filter these results correctly?
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