I am copying data from DataTable to another DataTable with a structure.I have to hardcode coulums number in the loop and copy the data in object array.[code]...
View 2 Replieshow to copy data from datatable to table in dataset i ry this but its readonly property
ds.datatable1=newdt.copy
How to Save DataTable Structure And Data Into A Datatbase Table..
View 7 RepliesHere is the:
Imports System.Data.OleDb
'Add reference to Access then
Imports Microsoft.Office.Interop
Imports Microsoft.VisualBasic
[CODE]...
I am using this to copy tables in an Access database(2003). the questions I have are:
1. How can I make this more 'obejct oriented'?
2. How can I copy just the structure of the tables and not the data?
(Currently both are occuring)
I have a chart control (stacked chart to be more precise) and a datatable that contains 3 columns. I want to bind them into a stacked bar chart. below is what the datatable looks like:
[Code]...
I would have the Resource column as the x-axis, and the value (hours worked) of each Queue as the y-axis (stacked)I've tried just binding normally and I'm getting an error saying that it's the wrong data type.
I'm using vb.net 2010.I have a DataSet with a Table and data. MyDataSet1 which contains Table1 I want to create another table that is the same as the Table1 but without data, but it should have the columns, etc.
View 1 RepliesI am trying to copy/paste a structure to the clipboard the copy appears to work but the paste errors with "COMException crossed a native/managed boundary ErrorCode = -2147467259".The error occurs on the highlighted code line below. Is it possible to put a structure on the clipboard?
Public Structure Obstacle
Dim Type As obs
Dim Deleted As Boolean
[code].....
I have a array based on a structure that I want to build a datatable from. Here is what my structure looks like currently,
Public Structure QRQFiles
Public Complex As String
Public DescriptiveName As String[code]....
Since I have a structure with in the structure will I have to define two datatables to represent this?
How can I copy from a structure to the memory referenced to by a pointer back and forth?I need to do it with an offset.
Dim g_memoryPointer As IntPtr
Dim teArgs(10) as ArgumentStructure 'a structure defined somewhere outside my prog
Dim ix as Long, offset as Long
[code].....
I want to copy files with a specific extension (for example .config or .exe). It should create a structure of nested directories, and then insert each file into a specified place in the directory hierarchy. Ideally I would just specify a parent directory for each file and a parent directory for each directory and it would build it.
I need any existing utility or batch file or power-shell script or C#/VB .Net code to perform this activity.
I want to copy a datatable into a clipboard so I can paste it into excel and other programs I use, how can I get that to work? If there is no way to get it to work, how can I get a datatable in the clipboard and have it tab delimited?
View 2 RepliesI want to copy datatable to dbo.Products
View 9 RepliesI have a datatable which has 5 column. It is possible to copy only its 2 column in and save it into new datatable.I used this code but it copies all the 5 column
Code:
Dim qry As DataTable = (From obj In temptable Where obj.Item("Column1") = 0 _
Select obj).CopyToDataTable
i used this one but it is not supported
Code:
Dim qry As DataTable = (From obj In temptable Where obj.Item("Column1") = 0 _
Select obj.item("Column1"), obj.item("Column2")).CopyToDataTable
I have a DataTable with 20 columns and it have lot of rows. I have created a SQL table which is have the same 20 columns. Now I want to copy the complete Datatable to SQL table using VB.net 2005.
View 3 RepliesI have a derived DataTable[code]...
Overload resolution failed because no accessible LoadDataRow' can be called with these arguments.
I start by looping through a string array, parsing out the strings I want and saving them to a temp table (I believe this part is working).Then, I take a DataView of the tale to get only the unique values from the rows.Then, things get messy, I need to get these unique values into my dataset. I been trying to do so using the DataView and also by passing the View to a new temp table then looping the values into the DataSet
View 1 RepliesI have a scenario where-in I have a DataTable with certain columns "Col1, Col2, Col3". I want to copy just "Col2, Col3" into another DataTable which has a primary key "ID". What is the best way to copy them. There are 5000+ records and performance is a key factor.I tried with Select, DefaultView.RowsFilter but no success. I know one option is to loop through all records an copy data one by one in second DataTable. But wanted to know a better way.
View 1 RepliesIm getting a constraint error when running the following code. there are four fields set as the primary key on the table: bid number, phase number, phase version, detail number.
It errors out saying that bidno, phaseno, phaseversion are the keys and unique. it does not mention the detail number, but it will error out as soon as i run the line dtDest = dsbid.phasedetail.copy....or, if i use the clone (as in the example below), it errors as soon as i add the row.
CODE:
I am updating a data table (dt_report_crypt) from an encrypted csv file in the code below:I decrypt the colums and update the same dreport_crypt, such that it will contain de-crypted data.This part is working wellI however need to use this de-crypted datatable as a data source to update a second table(dt_report), using the sql SELECT command to filter relevant data,
Dim dt_report As DataTable
Dim dt_report_crypt As DataTable
Using cn As
[code].....
ds.Tables.Add("OpenTickets") ds.Tables("OpenTickets") = ds.Tables("AllTickets").Copy()
View 2 RepliesIn VB.NET I would like to create a complicated data structure with multiple types of data stored in an array like format (see below). I am trying to create a data structure that would look something like this: [Name; xLoc; yLoc; zLoc; [Jagged Array]] Note: Name needs to be dimensioned as a string, xLoc and so forth as integers. The Jagged Array would look like this:
[Code]...
I have a list of a few thousand names. I actually have last name, first name, phone number, etc and more info. I'm going to make a class to contain the data. so I'll have like a people object with for example a last name field. I'm going to store these in like an array list. Lets say i have 100 items in array list. Maybe last name smith is on index 3 21 and 63. I'd like a data structure where i can easily search for smith and get indexes 3 21 and 63. Brute force is simply loop through complete array checking last name and grabbing index each time i find smith. Ideally id like to have more efficiency. In c++ I'd use a multi map but i don't see that that exists in vb.net. A dictionary wont work because its 1:1.Name of data structure, short description of how to use it and web help reference page would be nice.
View 2 RepliesI would like to use data structure in VBA. the code like
Public Structure employee
Public firstName As StringPublic middleName As String
End Structure
But there was compile error: Expected :end of statement. Can I use data structure statement in this way? how to use data structure in VBA?
i have an application. this application is using findwindowa api for check if there is instance of its own. (sorry for english) so we cannot open this app two times. as you may guess i wanna open thousands instance of its. (or 2-3). i tried disassambler but code is encrytped or something like that. so what can i do? maybe i can:
* run app from diffrent application. if its possible findwindowa can fail.
* change class or window name (i think its not possible)
* block applications findwindowa call
I have some structures and I change the data inside a loop. This works ok. But as soon as the method ends, all values in the structure are reset???
Heres my
Private Sub ReadDevice(ByRef device As Device)
Console.WriteLine(" Reading device " & Device.name)
Dim data As Short
[Code].....
I am working on an application which can apply tweaks to Windows XP. I populated a TreeView with some nodes, but how can I display the diffrent properties? I mean, some need some checkboxes or radiobuttons or a listview. I want something like a TabControl, but whitout buttons on the top.
Does something like that exists?
I'm done with a solution and I don't want to work with it anymore, except for small bug fixes that may come up. I have a new project assigned to me which to take the project I just finished, and add some new features to it. But I wouuld be changing alot of stuff in this program. So I want to copy my solution, save it as a diffrent name, so I can work off the old solution and start modifying it, but I will always have the original one to fix any bugs or go back to.
View 5 RepliesI'm designing a choice based adventure game in VB.NET 2010, where you are presented with a story label, and you choose between 2 buttons, which choice you want to make. I want to know the most efficient way to do this.My goals are to store the labels for the buttons and the story in some form of data structure, which is temporarily a hash table right now, and some form of structure for the choices. Right now I am using a custom class that references the indexes of the next 2 choices and their respective label indexes which stores the class instances in a hashtable.I've looked into things like arrays, dictionaries, lists, and collections, but I'm not sure which one best fits what I'm after. Any .NET data structure would work. What is the most efficient data structure for these 2 pieces of data? Would just a string array work?
View 2 RepliesI have problem about how I call a function on DLL to get data from a structure. Have a C++ example about how it's works the library, and I want to use it on vb.net. his is the working c++ example:
Declaration:
BOOL (WINAPIV* MyFun)(DWORD start1, DWORD stop1, P_RESULT pResult, PDWORD pTpNum, myCALLBACK lpFunc) = NULL;
Call:
// pStruc = RESULT structure
// TrpNum1, TrpNum is ULONG
ULONG TrpNum1=0;
MyFun(Start,Stop,pStruc+TrpNum,&TrpNum1,&myCB);
Callback:
void __stdcall myCB (RESULT *pStruc) {
printf ("%.3f", (double)pStruc->val1);
tpn++;
[Code] .....
The error is this: "Attempted to read or write protected memory. This often indicates that other memory is corrupt."
Is there an easy way to get data from a table in SQL Express and put it into a Structure? The table has one string column and five bit columns. I'm using VB.net
View 13 Replies