Dataset updating row

Hope this helps Jay Cor, Sorry wrong URL, I changed pages in the browser, but the url did not change, try this page (the page immediately after the one I sent before). Fill(nwind DS, "Categories") dim dr Row as datarow = nwind DS.tables("Categories"). Sceppa's book explains it more detail then the above statement. Fill(nwind DS, "Categories") Dim dt Table As Data Table Dim dr Row As Data Row dt Table = nwind DS. New Row() dr Row("Category Name") = "New Category Name" dr Row("Description") = "New Description" dt Table. I typed it here not in the IDE so there can be little errors but basicly it is OK \\ Sub Main() Dim nwind Conn As Sql Connection = New Sql Connection ("Data Source=COL-TP5170-LT1\VSdot NET; Integrated Security=SSPI; Initial Catalog=Northwind;") Dim nwind DA As Sql Data Adapter = New Sql Data Adapter ("SELECT Category ID, Category Name, Description FROM Categories", nwind Conn) Dim nwind DS As Data Set = New Data Set() nwind DA. Fill(nwind DS, "Categories") Dim dt Table As Data Table Dim dr Row As Data Row dt Table = nwind DS. New Row() dr Row("Category Name") = "New Category Name" dr Row("Description") = "New Description" dt Table. Modified, as that is how it knows to use the Insert Command, Delete Command, or Update Command respectively. Add followed by Accept Changes causes nothing to occur on your database. Open() Dim Sql Insert Command1 As Sql Command = New Sql Command() Sql Insert Command1. Open() Dim Sql Insert Command1 As Sql Command = New Sql Command() Sql Insert Command1. Accept Changes on each row that it processes, so you don't need to call Accept Changes after calling Data Adapter. Command Text = "INSERT INTO Categories (Category Name, Description) VALUES (@Category Name, @Description)" Sql Insert Command1. I basically copy and pasted generated code for this fragment. Tom ==== Sub Main() Dim nwind Conn As Sql Connection = New Sql Connection ("Data Source=COL-TP5170-LT1\VSdot NET; Integrated Security=SSPI; Initial Catalog=Northwind;") Dim nwind DA As Sql Data Adapter = New Sql Data Adapter ("SELECT Category ID, Category Name, Description FROM Categories", nwind Conn) nwind Conn. I basically copy and pasted generated code for this fragment. Tom ==== Sub Main() Dim nwind Conn As Sql Connection = New Sql Connection ("Data Source=COL-TP5170-LT1\VSdot NET; Integrated Security=SSPI; Initial Catalog=Northwind;") Dim nwind DA As Sql Data Adapter = New Sql Data Adapter ("SELECT Category ID, Category Name, Description FROM Categories", nwind Conn) nwind Conn. NVar Char, 15, "Category Name")) Sql Insert Command1. Fill(nwind DS, "Categories") Dim dt Table As Data Table Dim dr Row As Data Row dt Table = nwind DS. New Row() dr Row("Category Name") = "New Category Name" dr Row("Description") = "New Description" dt Table. NET - Core Reference" from MS Press covers this plus a plethora of other items about ADO. Using the Debugger, it appears the Data Set loads correctly, the Data Row is populated correctly, and the new row is added to the Data Set. Open() Dim Sql Insert Command1 As Sql Command = New Sql Command() Sql Insert Command1. Invalid Operation Exception' occurred in dll Additional information: Update requires a valid Insert Command when passed Data Row collection with new rows." Do you see anything wrong with the Insert? Invalid Operation Exception' occurred in dll Additional information: Update requires a valid Insert Command when passed Data Row collection with new rows." Do you see anything wrong with the Insert?

dataset updating row-17dataset updating row-28

Hope this helps Jay "tomp" wrote in message news:00****************************@.. Here is another page not write what you say, but what I think you mix up. I concluded that removing it seemed the most logical). (But I never use that, I bring it into if it is complex, I hate SQL) I added also the test for if the datase has changes (here always of course), than it skips the update if that is not, little bit nicer. I concluded that removing it seemed the most logical). Using the Debugger, it appears the Data Set loads correctly, the Data Row is populated correctly, and the new row is added to the Data Set. Open() Dim Sql Insert Command1 As Sql Command = New Sql Command() Sql Insert Command1. Command Text = "INSERT INTO Categories (Category Name, Description) VALUES (@Category Name, @Description)" Sql Insert Command1. NVar Char, 15, "Category Name")) Sql Insert Command1. Also I cannot think of a case where I would NOT want Accept Changes called when I called Update, there may be a case, however I cannot think of one... Add(dr Row) dim cmd as new SQLcommandbuilder(nwind DA) if nwind DS.haschanges then nwind DA. Close end sub /// I deleted the (does the dataadapter) and changed some things to add a row. that page does not explicitly state that Update calls Accept Changes, nor do I see where it states (on that page) that you need to call Accept Changes. The only reference to Accept Changes is in the note about what happens when Accept Changes is called. New Row() dr Row("Category Name") = "New Category Name" dr Row("Description") = "New Description" nwind DS.tables("Categories").

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