VS 2008 Set The Textbox Autocomplete Source To Specific Column In Datatable?
Mar 26, 2009how to set the Textbox autocomplete source to specific column in my datatable?how can i do that?
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Textbox AutoComplete Source Set To ListBox Collection
Sep 21, 2007Is it possible to have a texttbox autocomplete source set to a listbox's collection? I see:
FileSystem
HistoryList
RecentlyUsedList
AllUrl
AllSystemSources
FileSystemDirectories
CustomSource
in the texxtbox's autocompletesource property but are unable to make it happen.
Populate A String Array To Use As An Autocomplete Source For A Textbox?
Jan 26, 2010Dim dt As DataTable = MyClass.DatabaseRecordsetCall()
Dim str(dt.Rows.Count) As String
If dt IsNot Nothing AndAlso dt.Rows.Count > 0 Then For Each row As DataRow In dt.Rows
str.SetValue(row.Item(0).ToString, dt.Rows.IndexOf(row))
Next
End If
This is the code I am using to populate a string array to use as an autocomplete source for a textbox.The datatable has 17 rows in it. However, it creates the string array with a length of 18.Just an FYI, if you try to use an autocomplete source that contains a value = nothing, it will cause your application to crash.No, not cause an exception which could be dealt with, but a solid inexplicable, pull your hair out, scream and curse because you cannot figure it out crash. The microsoft message that comes up references the file browseui.dll.The above code as is, will generate an extra array value whose value WILL equal nothing and cause this crash to happen.
Datatable Column Value - Adds An Arraylist To It As The Data Source?
Oct 6, 2010I am struggling with a simple datatable issue. The following takes a data table that is on the form and adds an arraylist to it as the data source. The data that shows up in the datatable is the length of the value of the element in the arrayList.
test.Add("cjdsnthegtrk")
test.Add("cjdsk")
test.Add("cjdsk")[code]....
How do I control what is displayed in the columns? What I am ultimately trying to do is have a datatable that the operator can edit and the changes reflect in the underlying data structure.
C# - Change All Values In Specific Column In Datatable
Apr 9, 2012I have a datatable contain fId field. I want to update all values for this field to "1" without using loop. [Code]
View 1 RepliesWhen Fill A Datatable Can Get Distinct Rows For A Specific Column
Oct 23, 2009i fill a datatable in a typed dataset.. it has cities and states but I want to pull just distinct states and bind it to a control etc.. there is the filter, but i havent found a way to do distinct or group by. got to be a way without adding more datatables and filling them with data thats already there right?
View 1 RepliesAutocomplete Using AD As Source?
Dec 9, 2011I have some code that calls to Active Directory and gets a list of users then adds them into a ComboBox.
I would like to extend this feature by allowing the combo box to autocomplete when a user starts to type.
Ive read a few articles but they seem to be based on data coming from SQL server but none on Active Directory. Could anyone assist by advising how i could go about this?
Compare DataTable Column Rows To TextBox.Text?
Apr 27, 2012I have a Data Table Column with multiple Rows of data. I need to search all lines of TextBox1.Text for any data that is identical to any row in the specified data column ("MCaddRG"). Also any identical findings need to be made into a new text file or a new form with a text box.[code]...
*Also if it is possible I would really like to have a check box list that contains the data from the "Device" columns so I could check the "Device" and then it search the TextBox.Text for the checked "Device's" "MCaddRG"
Point The Textbox As Key-in Data TO Datagridview Specific COLUMN?
Nov 3, 2009How to point the textbox as key-in data TO datagridview specific COLUMN because some COLUMN i leave them as a BLANK
Exampel :
column 1=ID
column 2=Range
coulmn 3=Name
my question is :i want to key -in data in TEXTBOX1.text to column 3 Normally i use code bellow,
datatable.rows.Add(text1.box.text)
IDE :: DataGrid AutoComplete Column?
Jun 12, 2009Can we make a particular column in DataGrid to behave like text box AutoComplete mode?In the GUI, am planning that the user will select a ProductName and will enter the details in the datagrid.The problem I am facing is am not able to set datagrid column to AutoComplete.If I use Textbox or Combobox for the purpose, am not able to enter the selected content into the datagrid because the datagrid is binded to a dataset.
View 6 RepliesVS 2010 : System.ArgumentException Was Unhandled Message=DataTable 'get_item_list' Does Not Match To Any DataTable In Source
Apr 21, 2010I am working on a project that takes an xml schema and xml data files and places them into a DataTable, the 2 files are generated from a working table that i have written to disk. I wish to load these 2 files into a DataTable. Here is What i have
vb.net
Friend Function CreateTable(ByVal tableName As String) As Boolean
Dim table As New DataTable(tableName)
table.ReadXmlSchema(tableName & ".xsd")
[code]....
this however produces the following error on line 3
Quote:
System.ArgumentException was unhandled Message=DataTable 'get_item_list' does not match to any DataTable in source.
get_item_list is the parameter passed into this function (tableName)
Have A Datatable Which Has 5 Column : Copy Only Its 2 Column In And Save It Into New Datatable?
Mar 15, 2009I 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
VS 2008 - How To Add Third Column In DataTable
Jan 29, 2010I have following codes
str2 = "select sno,name from employees where sno =" & Val(Me.TextBox1.Text)
cmd2 = New SqlClient.SqlCommand(str2, con)
da2 = New SqlClient.SqlDataAdapter(cmd2)
dt2 = New DataTable
da2.Fill(dt2)
Now dt2 has two columns as sno and name
But I want to add a 3rd column city type char(80)
Use A Datatable As A Data Source To Update A Second Datatable Using Sql?
Aug 10, 2011I 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].....
VS 2008 FindItemWithText In Specific Column?
Feb 3, 2010Let's say I want to search only in the 3rd or 8th column of the listview. How do I do that?
View 4 RepliesVS 2008 - How To Get Unique Values From Specified Column Of DataTable
Jun 16, 2009I'm trying to make a method that can get unique values from a specified column of a DataTable. The problem is that the column may be string, integer, etc. I'm not sure what type of variable the (Of T) is.
Private Sub GetColumnUnique(ByVal dbTable As DataTable, ByVal ColumnNumber As Integer, ByVal ColumnType As ???)
Dim results As List(ColumnType) = (From item In dbTable.AsEnumerable Select item.Field(ColumnType)(ColumnNumber)).Distinct.ToList
End Sub
VS 2008 Sort Datatable Column(0) Alphabetically
Dec 10, 2010I want to sort my datatable column(0) alphabetically, but cant seem to find a way to do it. Just to give you an idea:
[Code]...
Have A Column In The Datatable Called Amount And A Textbox Acting As The Filter Called Say Maxamount To Set It?
Feb 9, 2011i was wondering if it possible to have a condition where lets say you have a column in the datatable called amount and a textbox acting as the filter called say maxamount to set it so the rowfilter when filtering the table will sum the number in the amount column until the number in maxamount is met, then stop and only return the rows where the total sum of the amount column is equal or less than the maxamount value, so i guess if the next row takes us over the maxamount it discards this row and returns the rows previous to it. is this possible using datagridview rowfilter or should i be loooking elsewhere to achieve this?
View 4 RepliesBuilding An Autocomplete On Textbox?
May 14, 2010I am building a autocomplete on my textbox. Really simple and it works really fine. But I like to do the next thing. When there is a match in the list and I will click on it. then i like to have a function.
For example
Private Sub ListItems_click(ByVal sender As Object, ByVal e As System.EventArgs)
MsgBox("test")
End Sub
How can i make this sub??
Specifying A Font In AutoComplete TextBox?
Dec 16, 2010Has anyone managed to modify the default font size for a AutoComplete TextBox, Windows Forms.
View 1 RepliesVS 2008 Inserting Record In Specific Column Name On Table?
Feb 24, 2011how can i insert record in specific column name..i've used this code it works but how can i insert my record in a specific column name?? here is my code in my btnAddRecord :
If frUpdate = False Then
IsConnected("Insert into products values(" & _
Me.TextBox1.Text & ",'" & _
Me.TextBox2.Text & "','" & _
[code]....
VS 2008 Return False If Move Specific Column?
Apr 13, 2010Im putting in an image in a specific column.
EX
[Column1] [More Columns]
Image |
Im trying to make it so if the user moves column1 it will not work. But still allow the user to change the order of the other columns.
.Net Textbox Autocomplete Selected Item?
Jan 27, 2011I have a vb.net form with a textbox on it set to autocomplete custom collection from a database. Is there an event that fires when a user finds the value they want from the autocomplete list?
View 2 RepliesAutoComplete Textbox And Keypress Events
Oct 20, 2008I am trying to do implement an autocomplete textbox in my application and I have a question about keypress event inside an autocomplete textbox. I have 2 textbox namely textbox1 and textbox2. Suppose to be, when the user pressed the RETURN / ENTER key, it will focus on textbox2. how come that on this event is not triggering.
Code:
Private Sub frmCheck_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'set autocomplete mode in textbox1
TextBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend
TextBox1.AutoCompleteSource = AutoCompleteSource.CustomSource
[Code] .....
Also, I would like to ask if how to validate the input if the value from the textbox matches from the autocomplete values. How can I compare the values of the textbox and the autocomplete source?
AutoComplete Textbox With Support For Delimiter
Apr 6, 2011I am developing an appilcation which requires a text box with auto-complete/suggestions (drop down) for multiple words (seperated by a delimiter like space) like the tags text box here in SOF. E.g. I start typing 'app' it should show all words in the suggestions list starting with app, and when I enter a word and press space and start typing a new word it should show all suggestions for that part-word.
View 1 RepliesTextbox AutoComplete - Items From ArrayList
Mar 19, 2008I develop an application in vb.net and mysql server for data storage. I have a problem in my database I have something like 5000 codes stored like code, description, quantity, price, firm. I have a function to extract all the codes from database , it takes about 4,4269 ms to extract all 5000 codes with description and everything... in an arraylist. When I want to put all codes from arraylist in a textbox autocomplete, it took about 2305,400 ms and I think this is a big problem the function to put in textbox autocomplete all the items from arraylist:
Code Snippet:
Public Sub PopuleazaTextBoxDinListaCoduri(ByVal txtbox As TextBox, ByVal list As ArrayList)
txtbox.AutoCompleteMode = AutoCompleteMode.SuggestAppend
txtbox.AutoCompleteSource = AutoCompleteSource.CustomSource
Dim valoare
For Each valoare In list
txtbox.AutoCompleteCustomSource.Add(valoare)
Next
end Sub
This is one item from arraylist extracted from database in this format :
code4993 ->description of code4993(3 buc X 234 lei)
TextBox AutoComplete From Database Records?
Jun 12, 2011how to use autocomplete in the textbox getting the records from database? i tried using the properties of textbox. But if the table is updated then autocompleteCustomSource is not updated...
View 5 RepliesTextbox Autocomplete String Collection?
Jun 30, 2010I have made taken one textbox in form, in which i have written following logic in Got Focus event.
When i focus on that its automatically showing all the suggested name from database field.
Private Sub CustomerName_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CustomerName.GotFocus
da = New SqlDataAdapter("Select CustomerName from CustomerMaster", myConnection)
da.Fill(ds, "CustomerMaster")
[Code]...
IDE :: VB 2008 - Data Grid - Capture The Value Of A Specific Column Of The Selected Row?
Jul 30, 2008I'm somewhat of a novice at VB.I have a DataGrid that I am manually populating from a SQL query-based dataset (see code below). Question: How do a capture the value of a specific column of the selected row (mouse click in the row) to use as a variable in other parts of the overall solution?Also, how do I add cell padding around the contents of the data grid cells?
[Code]...
C# - Dynamically Changing Textbox AutoComplete List?
Jan 8, 2012My client wanted to have a textbox in the Customer form of the application, which offers the applicable endings to a started street name. He starts to type a street name and the textbox offers a list of streets which start with the char sequence he typed into the textbox. Textboxes have the AutoCompleteCustomSource property and even though a list of common street names will be longer than it could be pre-filled on start, I could just hit a database with a query, populate an AutoCompleteStringCollection and show that to the user.
Now here's the thing: If I make the list populate on every keypress/keydown whatever, the program crashes and throws an AccessViolationException. I've found out that that's because: The control is in the middle of showing the AutoComplete list when at the same time it is being modified, resulting in the crash. When you refresh the Autocomplete List, the control is recreated with new pointers. Keyboard and mouse events (KeyPress, MouseOver, MouseLeave, MouseHover) attempt to reference the old control's pointers which are now invalid in memory causing a memory access violation to occur.
The underlying AutoComplete implementation does not allow for changing the AutoComplete candidate list object once it has been set on a window. To allow changing the list, WinForms destroys the Edit control or ComboBox and recreates it. This causes an exception if the underlying control is destroyed while the AutoComplete window is still use it. I read about this on MSDN, their resolution: Do not modify the AutoComplete candidate list dynamically during key events. I know that you can do this by creating a custom control and such, but can it be done with just pure coding wizardry?