Updating database using vb net

Posted by / 10-Jul-2020 20:17

But you must set up the Update Command so that it does the update you want it to. If I need to use Insert Command, can I use the same Data Adapter/Data Set ? Update ---how can I use the same m_da SQL that is already filled with the "select * from tbl A where [col B] = 'abc'" ? In VB6, using ADO I can loop thru the recordset,set the values of col Aand call the Update method.

Item("col A") = lrow --thisupdates the value in memory, but not in the database l Row = l Row 1Next Your Data Adapter goes and gets a copy of the data you want (based on the Select statement you set up in the Data Adapter's select command). You make changes to your dataset and then you call the Data Adapter's update method. Update() Catch ex As Exception 'handle exceptions here Finally con.close() 'not needed if the connection was closed to begin with End Try "fniles" Thank you. In my example, I Fill the dataset using Command Text "select * from tbl A where [col B] = 'abc'", before I update it. Fill(m_ds SQL) l Row = 0 For Each a Row In m_ds SQL. Rows() s SQL = "update tbl A set" s SQL = s SQL & (" col A = " & lrow) s SQL = s SQL & (" where [col B] = 'abc') m_da SQL. For every record in tbl A where col B = 'abc', I want to update the valuein col A.

Just to give you a headstart in the matter, the following would perform the update using this approach: 'Assuming an open connection Con Dim Adapter As New Sql Client. Fill(Ds) 'modify rows Dim Index As Integer = 0 For Each Row As Data Row In Ds. Rows Row("col A") = Index Index = 1 Next 'update the source table Adapter. In VB6, using ADO I can loop thru the recordset,set the values of col Aandcall the Update method.

I'm not sure if you can use a different set of columns than the ones used by the select query, I guess you'll have to do some testings. Update Command = Cmd 'retrieves the data Dim Ds As New Data Set Adapter. For every record in tbl A where col B = 'abc', I want to update the valueincol A.

In VB6, using ADO I can loop thru the recordset,set the values of col A and call the Update method.

For every record in tbl A where col B = 'abc', I want to update the value in col A.

Rows()s SQL = "update tbl A set"s SQL = s SQL & (" col A = " & lrow)s SQL = s SQL & (" where [col B] = 'abc')m_da SQL. For every record in tbl A where col B = 'abc', I want to update the valuein col A.

Also, don't use the prefix of "ado" for your connection name since you aren't using ado anyway, you're using ADO. Here's your code again (modified for better naming conventions and correct coding): Diim con As New Sql Client.

By the way, the m_ prefix you are using is not a recommened naming convention and will cause more confusion than anything else.

Value = s Parameter "Branco Medeiros" news:11**********************@t46g2000cwa.googlegr ..

Item("col A") = lrow --thisupdates the value in memory, but not in the database l Row = l Row 1Next Thank you.

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In your more generic approach, is this the correct way to set the value for tbl AID ? Sql Command( "update tbl A set col [email protected] A where tbl [email protected] AID", Con) Cmd.