I'm looking for a method or an event that would get fired when a row in a datatable is accessed. I have a datatable with several thousand rows, and an image in at least one of the columns. I want to dynamically load and unload the image from the row when it gets accessed. I haven't seen any documentation that suggests that it's there, ...
I have row collection. (DataRow[] rows) And i want to import all rows to another DataTable (DataTable dt) BUT HOW !? DataTable dt; if (drs.Length>0) { dt = new DataTable(); foreach (DataRow row in drs) { dt.Columns.Add(row???????) } //...
I am trying to succeed at getting this jquery plugin to work corretly. What I need is a click event that will alow me to click a row and have a js window that will load another page using the row_id that is the primary key in the database. I'm really lost with javascript but I like the plugin and really would like to have this work if po...
Hi, I have a function that search for a keyword and then return DataTable. I want to check if there rows inside because sometimes there's no query found. 'which one shoud I use ? If dtDataTable Is Nothing Then 'some code lbl_count.Text = "Found 0 result" End If If dtDataTable.Rows.Count > 0 Then ...
I would like to append one DataTable to another DataTable. I see the DataTable class has two methods; "Load(IDataReader)" and "Merge(DataTable)". From the documentation, both appear to 'merge' the incoming data with the existing DataTable if rows exist. I will be doing the merge in a data access layer. I could could usa an IDataReader ...
I'm adding data rows to my data table but the row count in the data table does not increase. Seems to be a limit of either size of the table or number of data rows. FYI, .net 2.0 ...
Does DataTable in C# provide a property that gives me the size of each row (number of bytes)? ...
How would you store a vector of N dimensions in a datatable in C#? ...
I have a datatable that generates rows of text inputs and selection lists and when I submit the values are null. I realize this is because jsf is generating separate random ID's for each input. I really need the data by rows and then parse out what I need. Any suggestions?: <h:dataTable id="returnableItems" value="#{returnableItemsBean....
Hi I am using the following to sort results of a datatable returned by a tableadapter Dim spots = myDataTable.Where(Function(t) t.UserID = 1).OrderByDescending(Function(t) t.Title) The thing is, I also need to OrderByAscending the very same datatable. But as far as I see, it is not giving it as an option. I am sure there is a way to ...
Hello everyone, I am using ADO.Net + C# + VSTS 2008 + SQL Server 2005. I bind an ADO.Net DataTable to a real database table, and then bind the DataTable to a grid view on ASP.Net page. My question is, if I want to do some data manipulation work (very simple, like add some prefix to some character data type rows, multiple integer data ty...
We have a reporting application where all DateTimes are stored in UTC in the database (SQL server 2005) The reporting application works simply be retrieving a DataTable and binding to a DataGrid displaying the information. If we know the logged in users time zone (e.g. +3 GMT), is there any way to update the DataTables dates which are ...
Currently have a DataTable, but wish to stream it to the user via a WebHandler. FileHelpers has CommonEngine.DataTableToCsv(dt, "file.csv"). However it saves it to a file. How can I save it to a stream instead? I know how to do it when I know the columns in advanced or they don't change, but I want to generate the column headings straigh...
I'm having a debate with another programmer I work with. Are there any significant memory usage or performance differences, or other cons which should make someone avoid using the DataTable and favour lists(of object)... or vice versa I prefer using the lists because they are more lightweight, strong typing to the object when accessing...
I'v been able to return a HashTable from a Web Service that I setup for a .Net 2.0, but the service fails to retun a DataTable in JSON. I keep getting the following error: 'A circular reference was detected while serializing an object'. Any tips? [WebMethod(EnableSession = true) ] public DataTable getSavedAddresses() { DataTable ...
Hello, I'm attempting to pull some data from a SQLite database so that I can populate a GridView in my GUI: here is the code that returns the DataTable: DataTable table = new DataTable(); SQLiteDataAdapter adapter = new SQLiteDataAdapter(this.command.CommandText, this.connection); adapter.Fill(table); return table; For some reason a...
Hello, I've got the following code which I think ought to be binding a DataTable to a DataGridView, but the DataGridView shows up empty. The DataTable definately has rows, so I assume that I am binding the DataSource incorrectly some how. Does anyone see what is wrong with this: DataBase db = new DataBase(re.OutputDir+"\\Matches.db")...
Hi everyone, I am wondering if it's possible to add data to a DataTable through a DataGridView and save the data in the DataTable by serializing it--and all of this without having to create an underlying database. One DataTable is sufficient for the amount of data I am trying to store and a database is definitely overkill. Thanks! ...
Is there a simple way to bind a PictureBox image to a datatable? ...
I read image by using OpenFileDialog. Sample code is below: openFileDialog1.ShowDialog(); if (openFileDialog1.FileName != null) if (picBoardImage.Image != null) { picBoardImage.Image.Dispose(); } picBoardImage.Image = Image.FromFile(openFileDialog1.FileName); I want to store this image in datatable. How can I do that? ...