VS 2008 : Can Data Reader Be Used As A Data Source For A Grid Control
Mar 21, 2010can data reader be used as a data source for a grid control?
View 5 Repliescan data reader be used as a data source for a grid control?
View 5 Replieswan to ask about anyone know the code about how to clear all the data inside the data grid view without clear the binding source...
View 1 RepliesI'm trying to create a simple Data Grid that will automatically save changes. So far I have a data grid connected to a MS Access 2007 Database that reads the data. I can create new fields in the Data Grid, but I need to program to save the data automatically to the database on update (or on close).
View 6 RepliesI have a problem with importing an excel into a data grid.
Here is my code:
Try
Dim _Obj As New ExcelConnection.ExcelConnection
_Obj.ImportAttendence("c:Info_pc.xls", DataGrid1)
Catch ex As Exception
End Try
In the excel i have numers and text and "Service Pack", "Processor Speed" and "Numar procesoare(Number of processors)" and the values for these are numers. in the data grid when i import the excel those values doesn't appear, i receive the value "null".
i'm got this sql query code in dataset designer
SELECT pkt.fldPackageID, pkt.fldPSID, pkt.fldQuantity, pkt.fldQuantityUsed, pkt.fldRetail, pkt.fldPK, ps.fldName
FROM tblPaketRow AS pkt INNER JOIN
tblProdukDanService AS ps ON ps.fldID = pkt.fldPSID
WHERE (pkt.fldPSID = @param)
I'm trying to display the results in datagridview,i drag from the data source in vs 2008..I can't figure out to do that.I use this code to set the @param on form_load event.
Me.TblPaketRowTableAdapter.JoinTable(SalonDataSet.tblPaketRow, modCommon.s)
i have used the following code to bind the data from an access database using datagrid in vb.net 2003. But when i execute, it is showing the error as " Object reference not set to an instance of an object". Can anybody guide me to find the error i have done.
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I have a form allowing user to search details of employees. the form allows users to key in 7 search criteria. the results of this search open in a new window. employee details (data) are of following 3 types: personal details contact details additional details
I want to achieve the following with the results window the new window that opens to show the search results has a tab control with 3 tabs for displaying the results for each of the above categories. hence the three tabs would be personal details contact details additional details each tab would display the required data in a datagridview control. on adding the datagridview directly to the tabpages of the tabcontrol the window does not resize to the size of the datagridview that is displayed. i understand that the property AutoResize is not applicable to a tabcontrol or a tabpage, hence 1 added a panel to each of the tabpages and then added the datagridview to it.
However, even this does not help and the results window is still does not resize to the size of the datagrdiview. i have set the AutoScroll property of all the tabpages to, AutoResize of the datagridview and results window all to True. How to do this as the results widow does not rezise even to the size of the tabcontrol that i have added and the tabcontrol ends up with scroll bttons in the window.
I need to restrict the user to enter only integer value in a particular columns in a Data Grid View. How to do this?I tried with "KeyPress", "KeyDown" & "KeyUp" events. But not succeeded. But the same worked well in a text box. (http://msdn.microsoft.com/en-us/library/system.windows.forms.control.keypress.aspx)
How to do the same for a cell in data grid view?
i m using excess database to create my project..But i stuck when i wanted to render a combo box and a button in my data grid view...means i wan every data row have it owns delete button and etc.
View 1 RepliesI refreshed my data sources to include additional items from the SQL Server databases and it appears that my entire data source from my VB.NET project disappeared.I am using Entity Framework. I may have clicked on something wrong, not quite sure. Unfortunately I can't recreate the Data Source without creating a new Entity and Data Model.I can delete the entry in the App.Config file and recreated it, however things aren't quite right.Is there a way that I can recreate my Data Source from the entry that is in my App.Config file...since that appears to have remained intact.BTW, I can go to my Data Model and successfully refresh from there, however my project isn't connecting to the database so I have quite a number of errors until I can get reconnected.
View 4 Repliesi am having sum textboxes and combos which have been populated accordingly. as in the attchment i enter the data in the textboxes/select values 4m combo and when click on save button all the related text is added to the datagridview's respective col. as desired. the problem is now that if suppose a user enters a wrong data and wants to edit/update the record already added the he will select the desired record from datagrid, double click and all the related data appears again on the combos and textboxes. the user then edits and click on save so that the selected record gets updated
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I am using VB 2008...
On my form I have a "Combobox1" that pulls a list from an access table. I also have a "DataGridView1" that pulls data from another access table.
I am trying to set the "DataSource" property of the "DataGridView1" after clicking a button, which pulls the "Text" property from the "ComboBox1".
ComboBox1.Text will always equal DataGridView1.DataSource as a text string.
I researched the Get/Set command, but it does not make sense to my specific application. I have read countless articles online for weeks, but I have now taken the next step.
I am student of MCS and i am working on my final project i face some problems regarding to show cubes data in grid control in vb.net around with dimensions
View 1 RepliesI'm looking to see if anyone has a sample app or has a link to such an app that uses data binding with a grid control and textboxes and is able to insert, change and delete from a datatable which gets updated to a sql server database.I have done an app that has the grid control and the textboxes already and is able to change and delete from the datatable and that action is reflected in the grid control because it has the datatable as the binding source.
The problem I'm having is when the user tries to insert into the datatable I get a concurrency violation error when using the .Update statement to save the changes to the database. This is happening because I don't know exactly how to get those inserts synchronised correcly.I'm sure I'm also doing the processing wrong but here is what I'm doing.When the user clicks an insert button I insert a new row into the datatable. The user now has the ability to enter text into the textboxes. When the user is finished doing that the user can click the save button which issues a .Update statement. That's where the error is displayed
how to pull/fetch data from SQL DB using Data Reader and loding to XML file.
After that I will have write code to read XML file and download to CSV file and Test files.
I need to create a new tree view, that is linked to a particular table.
Each row in the table has a parent id that links back to the table's primary key, and that defines the node hierarchy. So that relationship needs to be indicated in the databinding.
Am I able to use the standard treeview control in Visual Studio 2008, or do I need something extra to make this work?
Resources: Visual Studio 2008 Pro (currently in 90 days trial)
Platform: OS - Vista Home Prem 64-Bit
Language : Visual Basic
I'd like to bind my textbox into two (column)from different table is it possible to do this? I already know how to bind (one-to-one) controls and table.
I have been trying for days now how to create a process to the user to easily create a connection to any installed data types they have installed. I have found an example right inside vb2008. I never use this because I code my own connections, but this would be real nice if I could include it or duplicate it.
View 1 RepliesIs there a way to automatically put a Data Grid Row Column in a data Grid?[code]...
View 5 RepliesI created Dataentry forms. In the form there are so many controls like DropDowns and textboxes. I am using Access database. Now I enterd the few records into the controls, and these records are saved into the Database. But now if i enter the any data which i recently saved in the database to the textbox or any other control then the remaining controls should be display the related data.
For example i have 4 controls in my form one is dropdown and 3 are textboxes. If i select the data in the dropdown then the remaining 3 textboxes shows the related data. How can i dispaly the corresponding data to the other controls?
How can I develop a custom data source control for WinForms ? This example is just for ASP.NET. VS version: VS 2008
View 7 RepliesI have an object databound to a WinForm. One property, BOLNumber is bound to a textbox on the form. When you change the value in the form, the underlying BOLNumber property is changed. But the property setter does some "formatting" to the value. I want to BOLNumber textbox to reflect the changes to the value made in the property setter immediately upon the textbox losing focus. I tried implementing the INotifyPropertyChanged interface, but I am either doing something wrong or misunderstanding something it would seem. How do I get the databound control to reflect the changes to the underlying data source?
Public Event PropertyChanged As PropertyChangedEventHandler _
Implements INotifyPropertyChanged.PropertyChanged
Public Property BOLNumber As String
[code]....
When using SQL connections in my program, will I have to open and close the connection and the data reader each time I want to access the database ?
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I have a data reader "dr " that returns a row fo data, Assume dr returns values of 6 columns I need to create an instance of DatarRow using "dr", so that later I can create a collection of datarow objects that I will be adding to a table. However, how do I create a DataRow using dr object?
View 1 Replies1. I have a DataGridView box, that is connected to a MySQL database via the 'Data Source'. I am trying to do the datagridview1.rows.add("info here"), however i receive an error i cannot do this programmatically. I DO know the code to post to MySQL via the "insert into" la la la.However, I was curious if I can do this via the datagridview a bit..easier/simpler, such as a "datagridview1.rows.add(stuff)" sorta thing.
2. I am attempting to make a custom control, and as with ANY control, they have their.. settings. Example, a textbox, or label, has so you can set the Text. and color, etc.Others, have it (such as datagridview) have the little icon on the control itself, where you click it, and it opens a small window with settings.
How do i call ODBC Data Source Administrator form of Control Panel and get the selected DSN and its contents
View 3 RepliesHow to print data grid in visual basic 2008
View 1 RepliesI just want to display data in a DataGridView (from SQL - already made the connection) based on what is selected in a ComboBox (data that is also coming from SQL). The 2 are separete on the form. I am using VB 2010.
This doesn't work for me:
objCommand2.CommandText = "SELECT ProductID, Name, Color, Size, ListPrice FROM SalesLT.Product WHERE ProductCategoryID = " & cbCategory.SelectedValue
[code].....
The control comes up blank??Imports System.Data Imports System.Data.OleDb Public Class Form1
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I have an excel file that I would like to load into my form and display there.
View 1 Replies