Loading XML Data And DataGridView Without Binding
Oct 3, 2010
I have a datagridview (Unbound), which calculate several numbers, and I use this following code to save 5 of the columns to a XML file. My problem is that I would like to load this file back to my datagridview, and onlu to the same columns, without changing the rest of the datagridview.
Code used to create XML file:
Dim gridtable As DataTable = New DataTable("WaypointLeg")
Dim gridtable_collumn1 As DataColumn = New DataColumn("column1")
Dim gridtable_collumn11 As DataColumn = New DataColumn("column11")
Dim gridtable_collumn18 As DataColumn = New DataColumn("column18")
Dim gridtable_collumn19 As DataColumn = New DataColumn("column19")
[Code] .....
How I can load my XML file, and only update certain columns in my datagridview and not add 5 more columns to my datagridview? Is there a way to load the XML data to my datagridview without binding the datagridview to the XML file?
I mean without the use of the:
DataGridView1.DataSource = ds.Tables(0)
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Aug 25, 2009
I have combo box being filled with more than 50 thousand records. it is getting sometime to load and bind the data. I am using datatable to bind the data. I tried using data-reader as well but in vain.
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Apr 5, 2010
I have a bit of code which loads data from a stored procedure in MS SQL Server and then loads the data to a datagridview, which works fine. What i want is for the code that connects / loads the data to sit in my Database Class and then everything associated with the datagridview to be stored in my Form but i am having problems passing the contents of the bindingsource over to the Form from the Database Class.
[Code]...
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May 15, 2012
Loading into a Datagridview, Nothing seems to work no Error even with test data Added.
Here is some code
Dim SqlConnectionString, SqlCommmandText As String
Dim SqlAdapter As SqlDataAdapter
Dim Table As DataTable
[code]....
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Apr 30, 2011
When the program is executed, the datagridview populate data and also the textboxes(example StockNumber,Description) and when i typed words in the search textbox ,the datagridview filters the matching words.When I clicked the item in the datagridview the textboxes does not changed it didnt show the information...
what the solution for my problem..i need to display the information in the textboxes when i clicked the item in the datagridview. Private Sub txtreg_delsrch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtreg_delsrch.TextChanged
[Code]...
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Jul 23, 2009
I'm populating a DataGridView from a file with the following
Dim fnum As Short = FreeFile()
Dim inputLine As String
Dim i As Short = 0
Dim strAuditDate As String
Dim strAuditTime As String
Dim msg As String
[Code]...
When I do this, the MessageBox.Show shows the contents of a row, which is tab delimited. How do I get the data that I read to display in columns of the Gridview?
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Jan 19, 2009
I'm following advice to load data to a DataTable, binding to a BindingSource then a DataGridView. But some exzamples I've found use a DataAdapter, not a DataTable. [code]
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Oct 31, 2011
how to use datagridview. im gonna show some of my code for the connection and datagridview display
Public Class Form1
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
[code]....
i want to display in a textfield the first name based on where is selected after i clicked Button1, how do i do this?
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Aug 22, 2010
1) How can I load data from Text file to DatagridView. I want it because I'm making a listener. And when I load a data from text file, i want to edit rows. And this calling the second question.
2) How can I save data, Datagrid to Text file.
I found a code
Dim obj_oledb_da As System.Data.Odbc.OdbcDataAdapter
Public Function ConnectCSV1(ByVal filetable As String) As DataSet
Dim dataSet As New DataSet
[Code] .....
I can load data with this code but I can't save.
My Text File must be like this:
#IP
127.0.0.1 localhost
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Jan 10, 2012
I have Vb 2008 and Ms access 2007, I tried this code to show the data in Datagridview but didn't do any thing and didn't show any error. [Code]
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Jul 2, 2011
Binding Master Table to TextBox and DateTimePicker and Binding Details Tables to Datagridview then Add / Update / Delete in both
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Jun 2, 2011
an application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote
Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e
[Code]....
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Feb 3, 2012
I have a vb.net form to add, modify or delete the product list..i have a datagridview in which i m loading data from sql server datatable...now i have a text box which accepts code for the product..i want that when i press a key, all data starting with that key should be highlighted in datagridview.....
eg
i have product codes
A001
A002
A003
C001
D001,, etc..
Now i press A in text box...in datagridview all data with A should be highlighted
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Apr 14, 2010
During Loading a form, I bind a datasource property of the DGV to the bindingsource, and then set the fillweight property of the DGV columns. But, after form being shown, earlier set properties are being reseted to default = 100.
The procedure is like:
1. TestForm.Show()
2. TestForm_Load(...) Hnadles MyBase.Load
DGV.DataSource = bindingsource
DGV.columns(0).fillweight = 80
DGV.columns(1).fillweight = 120
3. Me.close() (Closing the form which called TestForm.Show()
And now I have visible a TestForm with well binded datasouce seeing all the columns, but their fillweith property was beeing reseted...
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Jul 13, 2009
I have a window application develpoed in vs 2008, framework 3.5, in which i have put a button.. Now where i click that button the other text boxes are filled up with the data from database thru web service.. what i want is while all text boxes are being filled i want to show an animated loading gif image till data loading is completed in all the text boxes.. i have tried to use image picture box but while data is loading gif image is displyes but in static mode.. cant see animation... i think this is because data loading and animation both are done thru one UI thread..
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Jan 10, 2009
I have the given XML file.
<!doctype mydata "http://www.w3.org/mydata">
<mydata>
<authors>
[Code]....
I want to bind it to the DataGridView and show it in a tree-like structure with the authors and editors shown seperately in expandable (+) symbols. I dont want to use DataSet. How do I do it using the XSD and the class file generated from it?
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May 10, 2010
i have an empty datagridview on FormA and calling a function in FormB to run a query and bind the results to FormA's datagridview. i receive no errors, but nothing shows up in the datagridview.here's my code (note: sql statement does return results within sql management studio)
vb.net
Public Sub GetRecorders(ByVal _sqlString As String)
Try[code].....
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Apr 23, 2010
how to use the VS 2010 IDE tools in a way the Microsofties didn't specifically intend. But since this is something I immediately tried without success.
I have defined a .NET 4.0 WPF Application project with a simple class that looks like this:
Public Class Class1
Public Property One As String = "OneString"
Public Property Two As String = "TwoString"
[Code]....
The expected result was that "OneString" would appear next to "One" and "TwoString" next to "Two" in the running window.
The question is: Why didn't this work? What will work instead? If I put bindings in a DataTemplate, it works. Blend, with its sample data stuff, implied that this should work, but it doesn't.
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Jul 16, 2009
It must be something stupid that I am doing - tring to bind a array list to a datagridview - this code wont display a thing.
[Code]...
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Apr 4, 2011
I've bound a collection with public properties that are of type double to a datagridview control. If, in the datagrid, the user enters a value that is a string I get an error thrown, and I can't seem to find the method to handle it.
The only way I've been able to fix this is to make all public items in my bound collection of type string, and in the get/set make the private variables double.
This is a huge pain; is there any way to do this in a more elegant fashion?
2nd question is there a way to make the default header text something other than the public property name? (I know I can manually change this in the code later, I was wondering if there was a way to automatically have it something else)
(below is example code; I've changed the P property to reflect that change I had to make)
Public Class clsPIDElement
Private _P As Double
Private _I As Double
[Code]...
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Nov 30, 2011
I have a grid populated from a list. Now there are particular properties in this list that I don't want displayed on the grid. It displays all of the columns perfectly, then adds 2 others I didn't originally have on the grid when I constructed it in designer mode. I have removed them after the binding with DataGridView.Columns.Remove("ColumName"). However, is there a way to prevent it from adding these beforehand, or is this the only way?
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Jan 13, 2010
I have a datagridview with a column made of comboboxes. Is it possible to bind them to the result of a query? I've been able to do that, but I need to bind each combobox to a different query, or better to the same query which is called with a different parameter.
So, I have column1 which is made of combos. The user selects an item, and in column2, which is made of combos as well, I get some items which are taken from a query where the parameter is the value the user selected in column1. After that, I have column3, made of combos, in which each combo is populated with values resulting from a query with 2 parameters: one is the value selected in column1 and the second from column2. And this should be for each row.
I've been able only to bind the combos of column1, which are all populated using the same query. I thought I could use an array of tables where the i-th element of the array has the table (populated by my query using the table adapter) which contains the element of the combo in row i. Is it possible to bind the combo in column_j and row_i to that table?
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Sep 28, 2011
I developed a windows forms app, using VisualBasic in VS 2010. In my form, first I declared a variable as DataTable (Dim VarTable as New DataTable).
Second, changed the DataSource property of my DataGridView (DataGridView1.Datasource=VarTable)
Third, I filled the VarTable in this way: using a resulset from SqlDataReader, i added row by row.
Dim Result As SqlDataReader=CommandSQL.ExecuteReader
Do While Result.Read()
Dim RowToAdd As DataRow
RowToAdd=VarTable.NewRow()
RowToAdd("Code")=Result("Code")
RowToAdd("Name")=Result("Name")
VarTable.Rows.Add(RowToAdd)
Loop
Fourth, after the user changed data in datagridview, I saved the data back to SQL, cleared VarTable (VarTable.Rows.Clear()), and back to top of form to accept a new code. But here, problems begin. When I execute again the whole code described, the datagridview dont show the entire rows, and sometimes crashed with different errors. Solution? Dont fill VarTable row by row. Use VarTable.Load(Result) to populate the VarTable. I don't know why now works, But just I wanted to share this information.
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Aug 25, 2009
Private Sub AddRowToDG(ByVal TempDt As DataTable) )
Me.dg.DataSource = TempDt
end sub
i get errorObject reference not set to an instance of an object when i try to bind the dgits some times works fine and some times gives me errorladil
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Feb 2, 2012
I have DataGridView which is 'binded' to dataset table. When I add new field to the table from access ,that field not appears in the datagrid. I am looking a way to refresh datagrid columns.I was try to delete datagridvew and add new datagridview with the same properties,but still last field(column) is missing. I was try to add new column manually, and I was set property name corresponding to the new field name. but data is not shown.
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Jun 17, 2011
I created two tables(FIRSTtable and SECONDtable) in the mysql database and two tables that are related.[code]...
Relations between the two tables using the product_id column with UpdateCascade and DeleteCascade. Both relationships are functioning normally when I try with the sql script. Suppose I delete all product_id in the FIRST table, all existing data in the SECOND table will be deleted.
Both of these tables displayed in datagridview. When I delete all the data in the FIRST table, the all rows in datagridview FIRST table will be deleted, also the data in mysql the FIRST table will be deleted.
I try to open the mysql database, the data are in SECOND Table also deleted, the problem why the view that in the second datagridview, can not be deleted, still keep the previous data? How to refresh datagridview binding in vb.net or C#? [code]...
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Jun 3, 2011
i hve create combobox & text box and add database source to my project...i know how to binding data or load data to combobox using SELECT query..but can i change SELECT to INSERT query cz i wont when i type data into textbox,data will be in database...second..can i binding without add database to project..i mean mydatabase in debug folder..i hve problem binding data if database is not in myproject..
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Apr 2, 2012
Data binding should be an extremely simple thing to manage but I can't find a SIMPLE solution to the following problem.
I have two forms
Form1 contains a 4x4 MSFlexGrid (unfortunately an unmanaged COM object but I can merge cells, which I can't do with a managed Datagrid)
Form2 contains other controls which change the data in the Flexgrid.
I connect the two with a Public 4x4 array. Form2 changes the data in this array. I can update the grid data by reading the array. But how do I bind the Grid to the array so that it auto-updates - which is the whole point of binding isn't it?
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Jul 31, 2010
I have a listbox in my form that gets its values from a data table by data binding. My question is, when the data (row) is loaded it also selects the first line automatically. I do not want this because I want the listbox to select an item only when the user clicks on it. Otherwise, the iteme should ony be listed. Is there a way to manage this?
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Apr 7, 2009
I have a CSV file which I append using the LoadActivityLog sub and then I pass this CSV to a datatable and populate a DataGridView in my form using the WriteAcitivityLog sub. Everythign works fine. However the datatable passes the information into the datagridview in such a way that it populates the column header rows with data as well. I want to put custom column header fields into the datagridview. However i cannot figure out how to do this.
[Code]...
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