Replicating Table Rows In A Datatable Causes The Datatype In An Excel Output Report To Be Different?

Nov 3, 2010

I pull a report from SQL Server being not a fan of cursors I process that table server side in my code behind file. So I pull this report that is an address label report and my client wants there to be X number of labels per person. So I coded this function:

Private Function ProcessX(ByVal dt As DataTable, ByVal X As Integer) As DataTable
Dim dtProcessed As DataTable = dt.Copy
dtProcessed.Clear()

[code].....

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Set The Column Width And Leave The Top 10 Rows Empty In Order To Insert An Image Into Excel Report?

Sep 3, 2009

How can I set the column width and leave the top 10 rows empty in order to insert an image into my Excel report?

Here is my code:

If ComDset.Tables(0).Rows.Count > 0 Then
Try
With Excel

[code]....

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DataTable And Bit Datatype?

Jun 20, 2012

I have a window application created in VB.net 2005 and the backend is sql. I make a call to the database and it returns a datatable. When I loop through it, I get a value of -1 for my field "Rush" which is a bit datatype. when I pass the sql into the analyzer, I see the value should be a 1 so not sure why it's giving me a -1. Here's some of the code that's in the page: Dim tblSendEmail As DataTable

tblSendEmail = oService.GetSendEmailInfo 'Goes to a webservice and returns a record set in the datatable

For Each row As DataRow In tblSendEmail.Rows
iRush = row("rush")
next

[Code]...

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Change Datatype In A Datatable?

Jan 5, 2009

I have a datatable that I read xml into.

One of the columns is a date, but the dataype of that column is set to string. Is it possible to change that dataype to date?

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Sum Of A Double Datatype Column In Crystal Report?

Dec 25, 2010

I want this for a windows forms application (vb.net '08). I want a code for: I have a column called total that is of datatype double in SQL Server 2005. How can I sum this field or column in crystal report?

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Change DataType Of Datatable Columns?

Sep 7, 2011

I want to change the DataType of all columns of DataTable. I don't want use the loop.. [URL]

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VS 2010 : Combine Similar Rows In A Datatable (the Rows Only Differ By One Column)?

May 8, 2012

I 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

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.net Datatable Doesn't Support Datatype From DateDiff

May 9, 2011

I have a query to retrieve DateDiff in my SQL:

SELECT Convert(char,DATEDIFF(m, Temp.Opening_Date, '2011-05-01')) As MonthDifference From Temp

It was successfully retrieve the data from SQL Server. But when I bind it to my vb.net datatable, the value is null. It's seems like vb.net datatable doesn't support datatype from DateDiff... What can I do?

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Datatable :: Creating New Columns Ignores Datatype?

Jul 9, 2010

I have a datatable which has a number of rows containing dataThen I need to add some empty datacolumns which I do like this:

Code:
Dim OT_Hours As New DataColumn("OT_Hours")
OT_Hours.DataType = System.Type.GetType("System.Double")

[code].....

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Use A Datatable With A Hierarchyid Datatype To Populate A Treeview?

Mar 1, 2011

I have a DataTable that has a hierarchyid data type column pulled from SQL Server. Is it possible to use the column to easily populate a treeview object in Visual Studio 2008?

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Asp.net Mvc - Sorting Datatable With Linq With Correct Datatype Of A Column?

Mar 27, 2012

I have this code that use to sort a datatable.

Dim sortingIndex As Integer = orderby
Dim DataTableNew As DataTable = New DataTable
DataTableNew = dt.Clone
Dim query = (From c In dt.AsEnumerable Order By c.Field(Of String)(sortingIndex) Ascending)
query.CopyToDataTable(DataTableNew, LoadOption.OverwriteChanges)

My problem is that with this method I always need (Of String) for it to work, so the date columns are also managed as Strings witch is the problem. Is there a way to use the correct type so the sorting is based on the type of the column?

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Add Rows To A DataTable Without Losing The Previous Rows?

Apr 14, 2012

Dim _tableBackLogs As System.Data.DataTable
Do While i - 2 > 0
_tableBackLogs = Global.DataAccess.GetDataTable("SELECT SubjectID,SubjectName,Grade FROM SubjectPI WHERE RegNo='" & CInt(HttpContext.Current.Session("userName")) & "' AND Status='Fail' AND Semester='" & i - 2 & "'")
i = i - 2

Doing this replaces the previous data in the DataTable. I want to retain the previous data i.e i want the new rows to be added to the DataTable w/o replacing the previous rows.

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Convert GridView Table To Html Table But Rows Should Be Columns And Columns Should Be Rows

Aug 18, 2011

I have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.

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Retrieve DataType From SQL Table

Oct 29, 2009

I would like to retrieve the datatype of a specific element from a SQL table. The situation is that I am importing data from a source that does not match column-to-column with my SQL table. The objective is to compare the datatype from my source file to what it MUST be when I write it to my SQL table, and throw an error on a mismatch. I would like to do this without creating a class that contains the layout of my target table if possible.

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VS 2008 - Lock Grid Rows To The Number Of Rows In The Data Table?

Jul 27, 2010

when populating a data grid i keep getting a redundant row in the bottom. is there a way to lock grid rows to the number of rows in the data table?

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Display Data From Table In Report Footer Of Crystal Report?

Dec 2, 2010

I'm having a problem with my crystal report with regards to report footer. I want to display the data from the table, column name "Remarks" in report footer but when I try to call the data it doesn't show the remarks. I'm using VB 6 and mdb files as my back end. Is there any command or fundamental that I've missed?

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Autonumber Datatype For Very First Time when Inserting Anything To Table

Dec 1, 2008

I am using Autonumber datatype for the very first time when inserting anything to the table it does not give any problem but when i am trying to retrive data using the Autonumber field i get the following errorSystem.Data.OleDb.OleDbException was unhandled Error Code=- 21472 17913 Message= "Data type mismatch in criteria expression." Source="Microsoft Office Access Database Engine"below is the code that i have used. [code]

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Insert The Variable CDT (datatype : Date) Into The Table

May 6, 2012

Dim cDT as date
strSQL = "Insert Into computetb (period_id, date, staffer_no, day_type, restday, rate_hr, regular_hr, ot_hr, night_diff, basic_pay, ot_pay, nd_pay) Values (" & gPeriodID & ",#" & cDT & "#," & cID & ",'" & cTYP & "'," & cREST & "," & cRATE & "," & cREG & "," & cOT & "," & cND & "," & bp & "," & ot & "," & nd & ")"
dbs.Execute (strSQL)

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Sql Server - ADo Dot Net Passing The Table Datatype As Parameter?

May 13, 2011

what are the changes I need to for my DAL to support this.

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Remove Keywords From Excel Rows, But Not Delete Rows?

May 5, 2009

I have an Excel sheet that looks like this.

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VS 2008 Coloring Excel Sheet - Efficient Way In Order To Provide The Colored Excel Output?

Dec 19, 2011

I have to provide an Excel file as an output. I have to color some of lines and make them bold.The input is based on a dynamic list (in memory) and it also could be based on CSV file that I'm already provide today (based on the same dynamic list).I'm wondering what would be the most efficient way (in terms of performance) in order to provide the colored Excel output?Should I export directly from dynamic list into Excel - or - Should I export from CSV into Excel ?

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.net - Does Dataset.ReadXml() Set All Columns Datatype In Its Table As String

Aug 12, 2011

Following is the code which gets xml data from web service and then dataset reads using ReadXml method. This Xml has ID and MyDate tags for each table row (so table(0) will have ID and MyDate columns) and this Xml data does not have schema associated with it. When page is loaded first time, it sorts by ID in asc order. It was working until ID was 999. When next ID came as 1000, even in ID asc, 1000 is showing before 999 in datagrid.

I wanted to confirm that when dataset is loaded using ReadXml, all the columns in its table are treated as string even they are numbers or dates and that's why in ID asc order 1000 is coming before 999.

Also, MyDate tag has date in format "01/31/2011" (mm/dd/yyyy) and it seems that sorting is wroking fine for date. Would sorting by date always work even when dataset table MyDate column is of type string (assuming that my above statement is correct)? Are my two above assumptions correct?

stream = New System.IO.StringReader(XML data returned from web service)
With dataset
.ReadXml(stream)
dvView = .Tables(0).DefaultView

[code]...

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Replicating IsNullable(of T) Value Accessing?

Apr 13, 2012

When using Nullable(Of T) you can access its value by either calling Nullable(Of T).Value property directly, or by just accessing the object directly eg:

Dim myValue As Nullable(Of Integer) = 10
Debug.WriteLine(myValue.Value)
Debug.WriteLine(myValue)

How would I replicate the second example in my own class?

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Replicating Windows 7 Calculator Glow?

Jun 4, 2011

I am trying to improve the graphics of my application by adding a nicer feel of the glow in it. By default when you enter the button, it has the slight blue glow. What I am trying to aim for on the calculator part of my application is to make it "look" as close as possible to the Windows 7 Calculator.

This is the Windows 7 Calculator normally. This next picture shows the "glow" on mouse enter.I don't know where I should start on this. I'm trying to get the yellow glow that shows on there, I can just make a "image" replacement for the mouse enter property but I want it to be animated like the Windows 7 Calculator.

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SQL Server Query Combination - Get Rows From A Table Based On The Value Of A Field In Another Table

Feb 23, 2011

I have a query that I have to run that requires me to get rows from a table based on the value of a field in another table (which I have gotten earlier). I currently have it done like this (simplified).

[Code]...

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Using Datatype Object And Determine Datatype In Class Property - Several Integers Columns That Are Null In The Db?

Mar 8, 2010

anything wrong with using datatype object and determine datatype in class property? I have a typed dataset and it has several integers columns that are null in the db. and when I make a call it throws exception.is there anythign wrong with setting it as object in my dataset.. changing the throw exception property to Nothing and passing it to my property as integer?

for each row in myDS.DataTable
cRate.CustID = row.CustID
next row

and in my class

Public Property CustID() As Integer
Get
Return _custID[code].............

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[2003] Update Unable To Find TableMapping['Table'] Or DataTable 'Table'?

Sep 26, 2008

An unhandled exception of type 'System.InvalidOperationException' occurred in system.windows.forms.dllerror in line: dbAdp.Update(dbDset) in btnSave_Click, (elseif editflag = true) blockdescription: Update unable to find TableMapping['Table'] or DataTable 'Table'I was also wondering if I could simply use the ExecuteNonQuery for the delete statement, but since I've placed my data in a datarow, I'm not sure if i can actually use it. Any thoughts on this? Btw, this is my first time using a datarow, and I've recently been studying how to use ADO.net.

dr = dbDset.Tables(0).Rows(CurIndex)
dr.Delete()
dbAdp.Update(dbDset.Tables("addresses"))

[code].....

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Output A Single Column From A Datatable?

Sep 24, 2010

So this doesn't seem like it should be that difficult, but apparently I'm overlooking something..? I have a datatable that has 4 columns. I want to output only the second column from the datatable. Here's what I've got so far:

Dim dt As New DataTable
** Datatable is set here **
Dim row As DataRow[code]....

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Get All The Rows From Master Table And Relevent Row From The Detail Table In MS-SQL?

Feb 17, 2012

I am using MS-SQL and I am trying to write a query which fetches rows from the master table and related rows from the detail table. Now, the thing I want is that it must only fetch the first row from the master table and related field from the detail tables should be blank in that first row, now if there are related rows found in the detail tables, they must be shown in the separate rows. I have been trying using the following query but it is not giving the desired result.

[Code]...

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Crystal Report & Temporary Tables - Print The Table Data Through Crystal Report?

Jun 21, 2010

I m using .net , I create some temporary tables at run time, how to print these table data thru crystal report

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