I am trying to merge multiple datacolumns in a datatable. Eg. The address data is stored in a different columns such as, Housename, street, city and postcode. I want to merge those datacolumns in to one and put it into one datacolumn as "Address".
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Not certain what exactly I am doing wrong here, but I am having problems in setting a new DataTable (for posting back to the database) to the Changes resulting from the Merge proc of 2 DataTables. The code works fine until I attempt to set the ChangesTable --- it always ends up = Nothing.What is strange is that the "preMergeCount" = 0 and the "postMergeCount" = 23, which is EXACTLY how I expect it to be! So I know that the Merge is working correctly.
Dim sqlTable As DataTable = dsMonitoring.Tables("SQL_SRTraps")
Dim exlTable As DataTable = dsMonitoring.Tables("Excel_SRTraps")
AddHandler sqlTable.RowChanged, AddressOf Row_Changed
[code]....
I need to marge two datatable with condition. i table data come from local XML Database and another data come from remote sql data if any update made at remote datatable and then marge with local datatable. i wrote a code below :
Public Sub MargeTwoTable()
Dim SQL As String = ""
Dim RemoteTable As New DataTable
Dim LocalTable As DataTable
[code]....
as you see in my code data come from remote database which update date getter then local database . Both table are same and "ID" is primary key. I code is working well. But problem is that when data more then 1000 updated record so this function take too long in loops.
i write a code like : Dim mm() As DataRow = LocalTable.Select("ID = '" & RemoteTable.Rows(i).Item("ID") & "'"). for finding local datatable id row so when data is more then 1000 it take too long because localtable record more than 100000 records. So I need someone help to modify my code what the best way to write the code.
I have one datatable tempDT with value :
[Code]...
The problem is I want merge duplicate serial_no into one row which the value of testong adding to new column. I have tried many ways, but I can't find the solution. Here is my code behind :
[Code]...
My code got an error at messagebox.show at messagebox said System.NullReferenceException was unhandled Message="Object reference not set to an instance of an object"What is wrong? (dt1 and dt2 are all ok. They are have only one columnd: ID)
[Code]...
I have one datatable. In that table I have columns named [Total Day], [Present day], and [leave].
Data are as follows:
[Total Day], [Present day], [leave]
30 25 5
30 26 4
Now i want to concatenate those three columns in one another column. I want output something like this:
[Total Day] [Present Day] [Leave] [TotalDay PresentDay Leave]
30 25 5 30 VBCrLf 25 VBCrLf 5
30 26 4 30 VBCrLf 26 VBCrLf 4
i create a Class to update data from remote sql server to local compact sql server data. I write two method one method check if any update date in remote server method like..[code]Last i Call SaveLocalDatabase method. But When i check table in my local compact sql server database there has no data update.is any think missing to write. i Think i found a problem. i use LocalTable.Merge(dTable, True). When Merge Call then rowstate remain unchange.
View 2 RepliesIs there a way of merging (importing or whatver is the correct terminology is) the data from an Array in to a DataTable woithout looping. I already know how to loop through the array to populate the DataTable with new DataRow but I'm looking for something much faster if it exists. I've got a 1 dimensional String array i.e. 'String()' that I need to populate a DataTable with new DataRows.
View 4 RepliesI want to compare differences between two tables in my database with identical schemas.
vb.net
DataTable1.Merge(DataTable2)
Dim changedRows As DataTable = DataTable1.GetChanges
'changedRows is always Nothing. Why???
The DataTable1 is updated with rows from DataTable2 correctly. i.e. missing rows are added and datarows that don't match are updated. But the RowState of each row is still unchanged. I need to have the rowstate (added/modified/deleted) so that I can update the database table.
I need to write a method in C# to save all rows in a given datatable back to the database, but I cannot depend on the rowstate of each row. I can't think of how best to do this without extensive looping through the database table data or constant database querying.
I want to essentially perform the following insert / update for each row in the datatable, but more efficiently:
[Code]...
I have a datatable that has a resource in one field and hours used in another, it looks like this -
Resource Hours Used
Manager 1
Accountant 1
Field Staff 2
Accountant 3
Manager 4
Manager 1
Administrator 6
Field Staff 4
Manager 0.5
Administrator 1
What I want to do is be able to create a summary of the data table above that groups multiple occurrences of a resource and adds up the hours used for that resource, creating a summary that looks like this -
Resource Hours Used
Manager 6.5
Accountant 4
Field Staff 6
Administrator 7
I have three dataviews (dataview1, dataview2, and dataview3). These are of type System.Data.DataView, and all three have the same columns. Is there an easy way to merge them into one, so I have one dataview with rows from dataview1, followed by dataview2, and then dataview3?
View 1 RepliesEvery Morning, we are getting multiple PDF files and our Executive needs to see in one PDF files.
Right, now I am diong manually PDF Merge process using Acrobate Profetional. But Now, my client asking to convert this into automated process every morning.
How can we Merge PDF processing using programming language .NET / Java Script and automate this every morning ?.
(My client is not allowing to use any third paty tool for this process.)
I have multiple <body> tags from an word document. I do this with the open xml sdk. So the new document should generated with openxml The body's comes from
WordprocessingDocument.Open("C:TempTest.docx").MainDocumentPart.Document.Body.OuterXml
I have so different body's in a list. With al different values. Changed some text in the xml. And saved them in a new list. Now must that list in an new word document. How can i do that? I tried altChunk. But my word document is always corrupt.
I have a multiple text files that I need to merge. but I need to compare the reference number before merge it.[code]What will be the fastest way to deal it read line by line to compare. the text file consist of thousand of line
View 1 RepliesHere is a sample piece of my code, the problem that I am have is that I can only selected one record at a time to mail merge, regardless if I select 5 rows from the datagrid. Or I can mail merge the entire datagrid, but I want my users to be able to select the data that they want, whethere it is 1 or 5 rows and be able to mail merge based off the selection. I've been pulling my hair out over this, I know it is something simple that I am missing....Please help...I am working in VB.NET visual studio 2008
Private Sub btnMailMerge_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnMailMerge.Click
Dim objWordDoc As Microsoft.Office.Interop.Word.Document
'Dim objWordDoc As New Microsoft.Office.Interop.Word.Application
[code]....
I am converting data table content to string, Say the dataset has 12 rows and 8 column.
At the end, the Dict contain 12 rows or 96 columns. what's wrong with my code below, how do I reset the row?
Dim ds As DataSet = ClsDB.GetDataSet(sql)
If Not ds Is Nothing AndAlso ds.Tables.Count > 0 Then
Dim row As New List(Of KeyValuePair(Of String, String))
[CODE]...
Dim col As DataColumn = dt.Columns(index)
' Remove (and automatically empty) the column object from the table
dt.Columns.Remove(col)
[code].....
is there any way to change the order of the datacolumns in a datatable at runtime.
View 2 RepliesDim orders = From tt In testTable _
Order By tt.Item("OrderNumber") _
Select tt.Item("OrderNumber"), tt.Item("OrderId")
This is breaking. Is there a way to do this? I would have thought it was easy enough. Obviously, I thought wrong....
am new in crystal report, here wana to add 2 datatables in the crstal report' Private Sub btbPrint_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btbPrint.Click
[Code]...
Here is my [code]...
My textbox (txtCopies) default value is 1 so naturally, as it is coded above, the datarow is added once into the Movies Table. But what I need to know is how to code if the txtCopies field has a greater integer value.
I am using Microsoft Access database. Since Access Database Table cannot have more than 255 columns, I am using vertical database partition technique where I have splitted informations into 5 different tables. Each table has 100 columns, and first column is primary key. Now I need to read data from these five tables so that I can export it into Excel file.
[Code]...
How to create datatable with multiple records.
View 6 RepliesI am using VB.NET 2005. I need to know if I have some data values in a Datatable consisting 4 rows then is it possible to insert all these rows into a Table of a Database using a single INSERT statement?
View 7 Repliesis there a way i can get my datatable to have multiple constraints that are attached to a unique id? an example of what i'm talking about is if i have a unique machine but it's on many lines, can i show that somehow in a datatable? the reason i'm asking is that i have code that sorts the data by line number and shows the relevant machines in a combo box based on the line selection out of another combo box. i'm having to input the data into the datatable (as a starting point for the data base) and it's very tedious. i'm entering machines that have the same name in multiple rows because the line number is different. i can't figure out how i can add multliple values into my line number column so that it will sort properly when queried.an example of what i'm asking with regard to the datatable is as follows:
Machine LineNumber
slicer Line 1, Line 2, Line 4
conveyor belt Line 1, Line 6
So that when called to fill the combo box, the correct one is called.The code i'm using to sort right now is as follows:
Private Sub linecbo_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles linecbo.SelectedIndexChanged
Dim cline As String
[code]....
If the application is used with multiple users/instances adding records to the same database, whats the best practice for doing this and not incurring any conflicts with primary keys. Right now my partial solution is to do a tableadapter.fill before adding a new row to retrieve any new records. But this obviously isnt the best practical solution as the likleyhood of a conflict still exists when letting the apllication increment the key.
Whats a "correct" way to do this, any reading or examples would be great for me to learn.
I'm trying to copy multiple excel source files into one excel file. My current code is working only for 3 source files..If more than 3 files are there, it doesn't copy the data but creates blank work sheet in the output excel file. Lets say I have a source folder with 5 excel files. Each workbook contains one worksheet with data. It copies upto 3 worksheets along with data into output excel file.
Lets say excel1 contains A as work sheet, excel2 contains B as work sheet ,excel3 contains C as work sheet ,excel4 contains D as work sheet ,excel5 contains E as work sheet .Now my output excel file should look like..OutputExcel with A, B, C, D, E along with respective data.But my current code is giving output as A,B,C worksheets along with respective data but its creating blank sheet1,sheet2 in place of D & E.
SSIS Script Task Vb.Net Code:
Public
Sub Main()
Dim filePath
As
String =
[code].....
Unable to select multiple column in datatable [code]....
View 3 RepliesI have a datatable loaded from a database. I bind the datatable to a gridview on page_load. Now I want to filter the gridview by a user selection so I made a checkboxlist and wrote some code as follow at CheckBoxList1_SelectedIndexChanged
[Code]...
With this code above, it can filter if there is only one selection on the checkboxlist. I try to loop the checkboxlist myself but always ended up in errors. Hope someone can help me out to make this work.
