I have a TypedDataTable called CamerasDT which has a composite Primary Key of GroupId and CameraId. I want to use TypedDataTable.Rows.Find(key as object) to return a specific row by GroupId and CameraId. I don't seem to be able to find a way to send primary key to the find function.
View 1 RepliesI hava a strongly typed datatable and a list(of String). I want to build a linq query to return a datatable of the same type where the fields of a certain column of the table are in the list. I thought of doing a Join, although in normal sql I would have addedSELECT FROM Table WHERE Table.ID IN(...);This is what I tried in linq.
Dim Families As List(Of String)
Dim Articles As SomeStronglyTypedDataTable
Dim MatchingArticles = From a In Articles.AsEnumerable _
[code].....
I am currently using DevExpress 10.2 within Visual Studio 2010. In a previous question I was trying to print the current user view of a DevExpress GridControl with the user's choice of expanded or collapsed master rows and/or group sections. I was told this was not possible at this time. I have now decided to use the following code:
[Code]...
I need to find rows in resultsets that have every column without null.these resultsets got variable number of columns.currently, the only way that I can think of is creating a view on each resultset and filter this way:
select field1, field2, field3, field4, ...
from "huge query"
where field1 is not null and
field2 is not null and
[code]....
and then in a storeproc/function or .net code(c# / vb.net) loop through all rows / columns and flag or remove every row that got any null?
I pass it a valid dataset that has the department name and the Department id as a number..20, 40, 30..... I want to get the department number.. I pass it HR(which is in the ds.table) but I am getting an error on the rows.find() "Input string was not in a correct format" it is a string.. what else could i be doing wrong here...
Public Function GetDeptID(ByRef ds As DataSet, ByVal strDepartment As String) As Integer
'Dim dr As DataRow
' Check to see if date is already in the table
[code].....
Dim datatable_default_view As DataTable = DataTable.DefaultView.ToTable
Dim servicenumber As String = datatable_default_view.Rows.Item(e.RowIndex)("Service Number").ToString
If datatable.PrimaryKey.Length = 0 Then
Dim keys(0) As DataColumn
keys(0) = datatable.Columns("Service Number")
datatable.PrimaryKey = keys
End If
Dim datarow_edited As DataRow = datatable.Rows.Find(servicenumber)
Dim datatable_default_view As DataTable = _datatable.DefaultView.ToTable
Dim servicenumber As String = datatable_default_view.Rows.Item(e.RowIndex)("Service Number").ToString
'gets the service number of the selected row[code]....
I've put this code under the DatagridView_CellEndEdit event
The Problem: The 'data_row edited' variable doesn't get initialized when exiting the cell in edit mode using the keyboard (ie: pressing the down/up arrow).If I use the mouse it works as expected. Why is this ?
I have a word document with multiple tables. How can I specify in VB.NET to find a specific table and insert rows only into that one? I've successfully implemented the Find&Replace in the document... but the problem is that I have an unknown number of things that must be added into the table based on the data I'm querying from my database. So there is no simple solution as far as putting placeholders in the table and using the find and replace function.
View 1 Replies[code]...Find last rows each machine_id in mysql database with program?
View 1 Replieshow to find out the total number of rows in a database through datareader
View 3 RepliesI am converting DataTables to a generic list and need a quick and easy way to implement a Find function. It seems I am going to have to use a Predicate. Upon further investigation, I still can't seem to re-create the functionality. Private Function ByKey(ByVal Instance As MyClass) As Boolean Return Instance.Key = "I NEED THIS COMPARISON TO BE DYNAMIC!" End Function
Dim Blah As MyClass = MyList.Find(AddressOf ByKey) But I have no way to pass in a key variable to this predicate to do the comparison, as I used to do with DataTable..Dim MyRow as DataRow = MyTable.Rows.Find(KeyVariable) How can I setup a predicate delegate function in VB.NET to accomplish this?
Do not recommend LINQ or lambdas because this is question is regarding .NET version 2.0.
I am currently using the code below within a VB.Net application to find specific text in a Word document. The text is surrounded by symbols represented by the character codes in the .Text statement. The code below is working fine. The issue now is that sometimes the desired text within a document has been marked for deletion and appears as tracked change within the document. I would like to find only the desired text that has NOT been marked for deletion. Does anyone know of a way to determine if the found text is a deletion?
[Code]...
I have been trying to find the last filled column row in a sheet using this.
clast = xlapp.ActiveSheet.Cells.Find("*", SearchOrder:=XlSearchOrder.xlByColumns, SearchDirection:=XlSearchDirection.xlPrevious).Column
rlast = xlapp.ActiveSheet.Cells.Find("*", SearchOrder:=XlSearchOrder.xlByColumns, SearchDirection:=XlSearchDirection.xlPrevious).Row
I am trying to program a noise reduction algorithm that works with a set of datapoints in a VB.NET DataTable after being helped with my other question. Basically, I want to take two integers, a coordinate value (yCoord for example) and a threshold smoothing value (NoiseThresh), and take the average of the values in the range of (yCoord - NoiseThresh, yCoord + NoiseThresh) and store that number into an array. I'd repeat that process for each column (in this example) and end up with a one-dimensional array of average values. My questions are:
1) Did anything I just say make any sense ;), and
2) Can anyone help me with the code? I've got very little experience working with databases.
[Code]...
I've got a form - CMCConsole It pops up a dialog form for adding a new case.If the matter number in a textbox on that dialog form matches an existing cases matter number I would like to find it in the binding source of the CMCConsole form
Private Function CheckMatter(ByVal MtrNum As String) As Boolean
Dim cfIndex As Integer = CMCConsole.caseBS.Find("MatterNumber", MtrNum)
Dim cfIndex2 As Integer = CMCConsole.casefileBS.Find("MatterNumber", MtrNum)
[code]....
But it appear the filter for the CASE we were just on that is set on the binding source is keeping the FIND from seeing other cases.
caseBS.Filter = "CaseId=" & e.Node.Tag.ToString
Do I have to clear the filter in order to find a matter number in some other case??
how to search xml file and display the result in list box.then export a xml file to excel in the search result
View 4 Replieshow can you create find & find next (using tooltip menu) create in vb.net for datagridview value.
View 1 RepliesI have a rich text box with the following text in it:
word word
I am finding the endings of the word, that is, the string "rd". The following code finds the first occurance, but then fails to find the last occurance, and the variable "indexToText " changes to -1.After the first search, the debugger shows the startLocation at character position 4, so it is not past the second occurance but still will not find it.
indexToText = FrmMain.RichTextBoxPrintCtrl1.Find(searchValue, _
startLocation, eof, RichTextBoxFinds.None)
If I change the text to:
word word word
It then finds the first two occurrences and fails to find the last occurrence.No matter how many words I add, it always fails to find the last occurrence.
i'm trying to do some appointment book so i decided to use MonthCalendar control and date changed event for choose the date i tried dataset.table.rows.find() function on other tables which have int primary key and it works its finds my row/s i need but when i tried this func. on date type primary key it cannot find i tried to search with date type ==> fail search with string type like 03.07.2012 ==> failed etc.
View 3 RepliesI am suppose to only Find the total of each column in the last row. Find the grand total in the last cell (the bottom right corner)Ok i have tried to do the grandtotal but i am not getting what she wants done I have also tried to reverse the arrays but that was wrong to. I am only suppose to add two line one line is find the total of each colums in the last row and to find the grandtotal.
Module Module1
Sub Main()
Dim sum(5, 4) As Integer
Dim row, col As Integer
[code]....
Create composite and custom grid control in ASP.Net 2008 or above
I need to create composite control . My control like one "div" inside that div one Gridview control.
I'm trying to make a composite application.Lets say there are two regions with a view in each that interact with each other via drag and drop, view A contains a list of tasks that view b (which contains a list of People) doesn't really know about.When I select some tasks in the list from view a and drop it to another list maintained by view b which module should know what happened? does the module that maintains the tasks need to know about the module that maintains the people, or vice-versa? Where should I start?
View 4 RepliesI want to be able to get an instance of a class based on two fields in that class. I was hoping to use something like a dictionary, because I thought indexing would be the best for performance. Should I just use LINQ or go back to a strongly typed dataset? Here's an example of what I'm trying to do[code]...
View 2 RepliesI'm trying to create a composite control that will look like a ComboBox with a TreeView style. I'm new to this topic and I have an urgent need to create such control. I know it's not an easy task but please I need your advice to complete what I already started to build.My approach was to combined a TextBox, button and a treeview into a UserControl and make them work together as one control to achieve the control that I'm looking for (A ComboBox with a Treeview style).
So I started by creating a new windows forms control library project and I added a text box and a button as a starting point. The text box will display the name of the selected node text of the treeview and the button will show the treeview under the text box when the user click on it.
Now I'm facing tow problems with my custom control:First when I drag the custom control to a test form the resizing of the control doesn't work properly even after I used the anchor property of the text box and button controls. If I try to resize it horizontally its working find but it's not vertically.
Second I don't know how and where should I place the treeview control and how I'm going to show it exactly under the text box when the user click on the button and hide it when the user click on one of the treeview nodes.
On my custom control I've added a Property 'DisplayMode' that, at run time, does a great job of showing or hiding different sets of the standard controls. But, at design time - no matter what I seem to do, my control shows all of the child controls associated with it
View 1 RepliesWindows Form I have a textbox when I enter DOB in the textbox the Age should appear respectively .[code]...
View 2 RepliesI've been trying to get the IPs (or computer names) of the computers in the same network as the computer running the program.
I got as far as getting all the IPs of the servers in the network wich ended up in a dead end since its all the computers that i need and not the servers only.
My goal is to get acces to files on all the other computers, i guess a shared folder would do the work and just access it as a regular folder, but for that i need the computer name (wich i can get through his IP)
Basicly, I need to find the ips of all computers in the same network wich is not what i get right now...
Dim localIP() As System.Net.IPAddress = System.Net.Dns.GetHostAddresses(System.Net.Dns.GetHostName)
Dim strLocalIP As String = localIP(0).ToString
[Code].....
Yes I Was wounder How Would I use System.Net.Sockets To Find my IP And Then In A Separate code How Would I Make an IP changer What Im I making?: Im Making A Program That Tells You Your IP..and then There Will Be an Option To Change It If anyone no's about Computers I Want to No Y when I made An IP Thing in VB6 (using Winsock) That It Shows Me a Different [URL]..
View 9 RepliesHow to find the value of Pi using VB or C? and i want to calculate the values until a millionth or more than that where in i can use the values of the obtained in another program. fir example in a encryption program.
View 8 RepliesLet's say we have a composite web control with a combobox and a textbox. Is it possible to build into the control functionality such that when the text in the textbox changes, it posts back and adds the value as an option in the combobox?
I know that I could add an "onchange" handler to the textbox and make something work with Javascript, but that's not really what I'm looking to do. Is there a way to just put like:
CODE:
In the web control code and it connect to the TextChanged event of the textbox?