I am using this code to save my Binding source data to a text file:
Dim sfd As New SaveFileDialog
Using sw As New System.IO.StreamWriter(My.Computer.FileSystem.SpecialDirectories.MyMusic & "iFX 2011 Playlists" & TextBox1.Text & ".txt")
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I have an Access database and I want to view on a datagridview specific rows. For that I used the following :
CasesBindingSource.Filter =
"OfferDate Between #1/1/1997# And #12/31/1997#"
Cases is the table, OfferDate a field of the table wich is DateTime type.
When I use Between operator I get the following error :The expression contains unsupported operator 'Between'.
is there any way that i could link/bind multiple binding source to only one binding source navigator?
View 4 RepliesI've got a somewhat sillier question this time. After I insert/update my data using SQLParameters, it wont refresh. I'm using the following code to refresh the binding source:
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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"
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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.
I am creating VB.NET Windows Application. I have Placed a Binding Navigator Control on Form and that is Binded with a BindingSource Object which has a Binding Source of a Data Table. I have Binded Two textBox with my Binding Source and I am able to Navigate in Records uisng Binding Navigator Object but when I made some change in my record and try to update that I my Database (SQL Server) it show an Error that "Update requires a valid UpdateCommand when passed DataRow collection with modified rows" where as I have defined DataAdapter.UpdateCommand and that is valid one. Below is the Code.
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This is the contents of the text file:[code]I have a combo box on a form and I want to bind some of the data from the text file, the stuff highlighted in bold, to the combo box.
View 4 RepliesI have text box which I use the properties window, datasource set to bindigsource1 in my dataset.. I want to trim the text that is being populated.. Is there a wayt o do this through the visual studio gui or is it redo in codebehind?
View 1 RepliesIm trying to do bind a dropdown list to a details view but keep getting an error about the dropdown list ID field:
<asp:TemplateField HeaderText="Approval">
<ItemTemplate>
<asp:DropDownList ID="Approved" runat="server" DataValueField="Approved" SelectedValue='<%#Bind("Approved") %>'>
<asp:ListItem Text="Approved" Value="Approved" />
[code]....
The error message as follows:
'Approved' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value
What is the proper way to attach the value of the dropdownlist to my object so that it can be properly created in the database? Most of my searches keep telling me how to bind a dropdownlist to an object data source, but that is not what I need to do. This is a basic drop down list of 2 items that will never change.
I'm working on a VB Winform project using Visual Studio 2008. The form's controls are all bound to a bindng source and a binding navigator which are tied to a dataset class. When the form is displayed, the first record is displayed as well. However, one of the controls (Radio button) is not showing the correct data from the data set. However, if I navigate to the next record and move back to the first, the radio button properly displays the correct information, so it appears the binding source is working the way it is suppose to.
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I'm trying to automate a data entry. I have a form with several textbox, combobox, etc.. and i will like to know if there is a way to get a specific row of data from a binding source and duplicate it so I can then simply make the necessary changes to a few columns.
View 3 RepliesI'm a VB.NET newbie, and i'm currently building a .NET application.
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How do i achieve the same in VB.NET (VS2010) in data binding mode?
I have a bit of code that reaches out and grabs a series of rows from SQL Server DB. I perform an inner join to get some related table data. In the process I get returned the user id of the creator of the data. I then want to pass this into a query to get back a full name. I am having no luck figuring out how to do just that. If I use the data visualizer I can see the name I am after, I cannot figure out the call to extract it
Bindingsource1.DataSource = GetData("Select * From PURCHASE_ORDERS WHERE PURCHASE_ORDER_NUMBER =" & REQ_NUM.Text)
.DataSource = Bindingsource1
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I have inherited an application at work that someone else started creating, right now about 1/2 of it is functional and is in use. My problem is that it is all done in 2.5 ?? and I am trying to step through it all to figure out how it works. I have always created my own binding sources, adapters and data tables.
One of the things I need to do is add a field to the fm_fieldman_master data table. I add the field in the db (SQL Server 2005)table, I come into VS and refresh the datasource, I then add the field to the fm_fieldman_master data table and the Fill,GetDAta() query I go into the designer and create all the attributes for the combo box
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binding navigators, datagrid view, binding source are all sql database parts.Will these parts still work if you havent got sql on you pc and your not using an database file (.log and .mfd) and your not coding to them, im using MS Jet/Oledb to code to Excel.What not to put on an Employee evaluation: This employee has hit rock bottom and shows signs of starting to dig.
View 2 RepliesI save data from datagridview to text file. I also load the same data from text file into datagridview for edit and update the same thing to text file. Let say this text file i called as Drill.txt. I have another text file called header.txt which need to match its value with the value of Drill.txt file then overwrite value from Drill.txt to header.txt. Now i want to make my Drill.txt in encrypted format to prevent anyone to open that file and modify out of program. They only can modify it through the program
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wan 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 have a question because in my I.O.File. I use this to save the data in the listview in a c: est.txt but the problem is that it only save one data and every time I click the save the previous data that I save is deleted and it change the new one that I save. And also when I click the remove in the listview it will also delete the data that save in the c: est.txt and the format should like this
First name | lastname | address |
rae alanah new york
john smith los angeles
Here the code that I did...
Dim myFile As String = "C: est.txt" '//file location
System.IO.File.WriteAllText(myFile, TextBox1.Text & " " & ComboBox1.Text & " " & TextBox4.Text & " " & ComboBox2.Text & " " & TextBox3.Text & " " & TextBox2.Text & " " & TextBox5.Text)
Or you can also create new code base on ur understanding. This is the first time I use the I.O file or file stream in vb.net because my crystal report does not detect my database that's why I need to do this.
I save data from datagridview to text file . I also load the same data from text file into datagridview for edit and update the same thing to text file. Let say this text file i called as Drill.txt. I have another text file called header.txt which need to match its value with the value of Drill.txt file then overwrite value from Drill.txt to header.txt.Now i want to make my Drill.txt in encrypted format to prevent anyone to open that file and modify out of program. They only can modify it through the program
View 2 Replieshow to save hashtable object to data or text file like (sample.dat or sample.txt)
i got this class Name Book.
[code...]
if i run this application it works, but if i close the application the hashtable items will be erase.i want to save the items to dat file or txt file.i got some idea but it doesnt work, i use the file stream :[code...]
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Private Sub SaveFileToolStripMenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveFileToolStripMenuItem1.Click
Dim MyStream As Stream
Dim SaveFileDialog1 As New SaveFileDialog()
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I wanna save the data present on the form to the text file.I am using vb.net for this. how can i write the text present on the form in the same formate (showing on the form) in the .txt file.
View 2 Repliesi want to retrieve data from text file and save it to sql database bt i just have to implement some conditions like if there are 3 entries exists in text file with the same ID but i just have to get only 2 of them so in what manner should i write the code....
Dim sbIDs As New System.Text.StringBuilder
Dim sbPunchDateStamp As New System.Text.StringBuilder
Dim sbPunchTimeStamp As New System.Text.StringBuilder
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I'd like to save data to a text file on a remote server I have. There are no security issues here, just the method.
Dim FILE_NAME As String = "123.456.789.012/variables.txt"
If System.IO.File.Exists(FILE_NAME) = True Then
Dim objWriter As New System.IO.StreamWriter(FILE_NAME)
[Code].....
I know it's not the most secure way of doing things, but the end data has to be in the txt format, otherwise I'd have used MySQL.
Im new here and hoping that I post this in the right forum. I am SLOWLY learning VB, and have run into a problem that I cant figure out. I have a standard form that you can enter data into.I want to take that data that is entered, and save it to a text file once I click the submit button at the bottom of the form. The form could have up to 500 entries into the form.
View 19 RepliesThe Save Button doesn't work when I'm Deleting data..
Here's my code
Public Class Form1
Private Sub Table1BindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Table1BindingNavigatorSaveItem.Click
Me.Validate()
Me.Table1BindingSource.EndEdit()
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I would like to know how to save data without click on the floppy disk on binding navigator. IS there any coding which i can use under a button to do the same function as binding navigator.I just want to use button to save and delete data rather than binding navigator.the data which i am using is in datagridview and details view?
View 2 RepliesI've got lots of textboxes and such bound to a BINDING SOURCE - the datasource of the CASEFILEBS is set like this:
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Seems "data saving" is not always being consistently done - sometimes a field change never makes it into the underlying datatable - sometimes certain field changes never make it to the DB. I believe I'm doing something fundamentally wrong that when fixed will clear up some of these issues.
I have 2 BindingSources that interact with controls on my application. Is there anyway to save them to a file and also load them?
View 2 RepliesI have two windows vb.net form. I got a text file. I am trying to encrypt some data and save it to a text file with the 1st windows vb.net 2005 form. Now with the second one am trying to decrypt the data and retrieve it here.
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