I am coding in Visual Basic. I am using a checkbox control. Now depending on its checked property I need to set/unset a bit column in a SQL Server database. Here's the code:
Try
conSQL.Open()
Dim cmd As New SqlCommand("update Student set send_mail = " + _
[Code].....
The send_mail attribute is of bit datatype. This code is not working.
I have a form that adds new contacts. New contacts are added by pressing an appropriate button and they appear as an entry in the list on the form. I try now to add an edit button that will edit existing entries.User will select a given entry on the list and press edit button and will be presented with an appropriate form (AddContFrm).Right now it simply adds another entry with the same title. Logic is handled in a class called Contact.vb Here is my code.
Public Class Contact
Public Contact As String
Public Title As String[code]....
For each column in data table i want to add parameter with same data type as column data type. But looks it's not that simple.
Dim cmd As New SqlCommand
Dim dType As New System.Data.SqlDbType
For Each cl As DataColumn In DataTable1.Columns
[CODE]...
How can I do this?
I am retrieving some records from a database dynamically, not knowing exactly which table I need to query, or even which fields to retrieve. I display this data in a control that looks a bit like a listbox, except each item is two lines: a label and a value. Now, the user needs to be able to browse through this list until he finds the item he needs, and then he should be able to edit the item.
This application will (eventually, this is just a 'proof of concept') run on a mobile device or PDA or something like that, so space is limited. To allow the user to edit a value, I simply show a panel containing some edit control (textbox, checkboxes, combobox, etc), let the user edit whatever he's editing, save the change and display the list of items again.[code]...
I need to create a function which have either 1 parameter with a string as data type or 2 parameters with double as data type.Something like the substring method.
View 2 RepliesI want to edit one of the bits in the DefaultConnectionSettings key under [code]...
View 6 RepliesI'v designed a ms access database table with one field having Datetime datatype. I can Insert data into it from vb.net front end by trns_dt DateTime.Now.DateBut when I fetch records from the tableand assign the dataset datasource as da, it shows datatype mismatch error.
daleDbDataAdapter("SelectDaily_Transactiondtp_from_dt.value dtp_To.value con)
dsDataSet
[code].....
I have been using Visual Basic for about 2 weeks now so I know I am getting in over my head at this point, but times a factor. I have created a user form with around 100 User entered text boxes and pull down menus, tabbed pages etc. I can create a distributable file with no problem. However I cannot find any kind of example, tutorial, etc that will show me how to allow an end user to save the form as "enterfilenamehere.DCP" (for example) and then reopen any .dcp file created in my form application. The only examples and tutorials I can find are how to type text and save it as a txt. format. Could someone lend a complete novice some advice or point me in a good direction on where to learn about saving and opening custom file types?To clarify The user can use my form, But at this point has no way of saving and recalling what they entered in my form. It's a one time use only...not really what I want.
View 7 RepliesI have an App where I'd like to be able to edit any type (font, colour, point etc.) at run time and use any of the .Net default type editors. (e.g., font/ colour picker).
Rather than re-invent the wheel, I decided to use the property grid control.
If I pass an object of, say font, to the grid, it lists all the fields separately, with no option to open the font picker.[code]...
I have a program that calculates commission, but if the commission is nothing then I do not want it to show a zero commission. I want a message box to show a message that there is no commission earned.
View 1 RepliesMy colleague gave me a DLL that manage all database business. I wanted to invoke a function that uses Stored Procedure and return the search result. In the function receive a parameter type in ystem.Data.IDataParameter[]. Below is my codes.
[Code]...
how to display data in grid view using code that you can edit, update and delete the data...do i need to have a stored proc in this?
View 4 RepliesI have a function (on vb.net) to get a data from a XMLWebService:
[Code]...
I added this lines in the form load of DataGridPrinter by Merrion in the codebank..[code]Unable to cast object of type 'System.Data.DataViewManager' to type 'System.Data.DataTable'.
View 2 Repliesevery time i run this code i get the same error
Unable to cast object of type 'System.Data.DataTable' to type 'System.Data.DataView'.
the code is
Dim plmExcelCon As New System.Data.OleDb.OleDbConnection
Dim cmdLoadExcel As System.Data.OleDb.OleDbDataAdapter
Dim PrmPathExcelFile As String
[Code]......
[code] "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.The statement has been terminated." [code]
View 6 RepliesI have one question. i have seen some codes like:
Req = CType(System.Net.HttpWebRequest.Create("url"), Net.HttpWebRequest)
Is it really necessary to cast the same type, or is there a difference when its not casted.
I have a number of controls (Device1, Device2, etc.) that all inherit from BaseDeviceControl. In the DragEnter event handler I am trying to test for the correct type by using the BaseDevvceControl like this....
[Code]....
I am pulling data from a local MSSQL database using a stored procedure, then send the data to a web service. Every part of the component works well except for a pesky problem will a DBNull being returned from the DataRow field, when I know that the field is not null and has valid data. The database and associated INSERT statements that add to this field are designed to not allow NULL entries. When I debug break the program on or right before the line that throws the error I see that the field has valid data for the current row.If I add a null check to the code (as below) the operation continues as normal:
Dim dataResultsTable = Me.myViewTableAdapter.GetData(int)
For Each myDataRow In dataResultsTable.Rows
If worker.CancellationPending Then
[code]....
Why is the read operation returning DBNull instead of the data in the database?
EDIT: Just to be clear, the operation does return the proper data, but the data is not being saved into the variable.
<ItemsControl DockPanel.Dock="Top" ItemsSource="{Binding Path={x:Static vmc:clsPersonViewModel.ChildrenPath}, Mode=OneWay}">
<ItemsControl.ItemTemplate>
[Code].....
In the code above, if there are no children (the ChildrenPath property returns NULL), nothing is rendered in the view. In the code below, when ChildrenDataSetPath is NULL the XamDataGrid still gets rendered. How do I achieve the same for a single object (as opposed to a collection) as the datacontext?
<DataTemplate DataType="{x:Type vmb:clsPersonViewModel}">
<igDP:XamDataGrid DataSource="{Binding Path={x:Static vmb:clsPersonViewModel.ChildrenDataSetPath}}">
[Code].....
Here is the current regex
"src=[""'](http://|./|/)?w+(.w+)*(/w+(.w+)?)*(/|?w*=w*(&w*=w*)*)?[""']>"
What I am trying to do is to grab element that is:
<script type="text/javascript" src="http://www.mysite="I need to grab everything inside these quotes">
With the current Regex I am able to grab the value but it also grabs all the "src" elements on the page.
src="http://www.mysite="I need to grab everything inside these quotes">
What I am attempting to do is to only get this one line that includes the
<script and then the src="">
And then just get the src="info from hrere" How can I edit the current regex code to include <script type="text/javascript"
i have an error is Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index how to rectify this.any one help me.
Try
If (conn.State = ConnectionState.Closed) Then
conn.Open()
End If
[Code].....
i have a problem with editing data in datagridview in vb.net 2005
View 2 RepliesI have a datagridview that is bound to a Dataset I have created. My question is, how hard is it to be able to edit/add data to these rows? It looks as though the Dataset is actually a query of somesort (which you obviously can't edit) Is there a way to link directly to the table for editing? I know you can do this using queries, etc... but I'm thinking there should be an easier way.
View 2 RepliesI am using following data to add new data to my table enter code here
Me.TblResultTableAdapter.Fill(Me.DbResultDataSet.tblResult)
Dim drNewRowEditSummary As DataRow drNewRowEditSummary = DbResultDataSet.tblResult.NewRow drNewRowEditSummary.Item(1) = "Test"
DbResultDataSet.tblResult.Rows.Add(drNewRowEditSummary)
TblResultTableAdapter.Update(DbResultDataSet.tblResult)
How can I edit my data using similar method as above?
My friend and I have 4 weeks to make a program in VB.net that will assist a teacher in some way.We have decided on a program that stores data and can record marks, attendance and calculate the data.We used a module from: url.... to Import the excel file and display the data. How do i actually edit the data? I want to first use a bubble sorting algorithm to sort and give the students a rank.
View 1 Replieshow do i add columns to a listbox??
And Checkedlistbox add and edit more than 1 data per item. So if you take a look at Cheat engine it got 3 data per row. 1: the checkbox, 2: the item name and 3 the value i want to change if i doubleclick (all this in same row)
So if you take a look at A cheat engine Video at you tube you can see the checked listbox that you can freeze things and change values so more thann 1 data.
I create receive item form that contained
Doc_id ,
Doc_date
And Data Grid View:
Item_id ,
Item_Name ,
Item_Qty ,
Item_Cost
I use this code to update data in datagridview
For R As Integer = 0 To ReceiveGrid.Rows.Count - 2
GridcmdUpdate.Parameters.AddWithValue("@DocId", TbxCode.Text)
GridcmdUpdate.Parameters.AddWithValue("@DocType", "ST_REC_VOU")
[code]....
I'm trying to edit the data of a column. I load the column in textboxes and let the user edit the fields. But now to insert it, I know I can delete the column and add a new one, but couldn't I just overwrite the data in the column?
[Code]...
I used a table adapter to fill a data table from a sql database.then made the datatable the source to a datagridview.how do i change data in the datatable, and how do i save it back to the sql database.
View 1 Replies
