Updating database with datagrid in
Keep getting this err msg at the high-lighted code, "Object reference not set to an instance of an object". Ole Db Public Class Form1 Dim my DA As Ole Db Data Adapter Dim my Data Set As Data Set Private Sub Form1_Load(By Val sender As System. Open() my DA = New Ole Db Data Adapter(cmd) 'Here one Command Builder object is required. Update Command = New Ole Db Command("UPDATE Table1 SET Field1 = ? ") 'It will automatically generate Delete Command, Update Command and Insert Command for Data Adapter object Dim builder As Ole Db Command Builder = New Ole Db Command Builder(my DA) my Data Set = New Data Set() my DA. Find Control("my Txt Box")) // We may want to check if something has actually changed here... Data Bind(); End If Here Daniel Cazzulino explains how to load a DSL (domain specific language) domain model instance file programmatically. NET type ...continue reading Here we offer a glimpse at 12 of . I need to know how to do this in VB.) Thank you for your time. You have to iterate the grid rows and update the Dataset accordingly. The C# code I showed for that, would be in VB: If (Page. This line in Form_Load should be throwing an object reference error: Data Grid View1. Fill(my Data Set, "Table1") Then you try to access it with "My Table". Then in the button click sub, make that reference the same.
NET EF, select ‘Employee’ table created in SQL Server using the script.
It also doesn't maintain the order of the rows in the grid.
Here is the trigger code that you should use to write grid to a table: $db Connection = 'workflow'; //set to ID of the DB Connection if using an external DB$table Name = 'PMT_YOUR_TABLE'; //set to table name// first clear the entire table:execute Query("DELETE FROM $table Name", $db Connection);//then write grid to the table:foreach (@=your Grid as $row) If you only have a 100 rows in your table, then you probably should worry about it, because My SQL is fast enough.
Load Dim con As Ole Db Connection = New Ole Db Connection("Provider=oledb.4.0;data source=|Data Directory|\test.mdb") ' Use relative path to database file Dim cmd As Ole Db Command = New Ole Db Command("SELECT * FROM Table1", con) con.
Close() con = Nothing End Sub ' Save data back into database Private Sub Button1_Click(By Val sender As System. I copied this code into a project, ran it and the "Data Grid View1. The question marks are just placeholders for the data that will be used to update the database. I used to rock and roll every night and party every day. Now I'm lucky if I can find 30 minutes a week in which to get funky. Ye needs ta be preparin' yerselves fer Talk Like a Pirate Day!