I created DataTable in my project.Fill it with table in database.
Dim myDataTable As New DataTable(Table_Name)
Dim myLocalConnection As New SqlConnection(_ConnectionString)
myLocalConnection.Open()
Dim mySqlDataAdapter As New SqlDataAdapter()
myCommand.Connection = myLocalConnection
mySqlDataAdapter.SelectCommand = myCommand
mySqlDataAdapter.Fill(myDataTable)
Now i want to delete a specific row from tableby condition. And update the table on database. with SqlDataAdapter.Update()
method.
mySqlDataAdapter.Update(myDataTable)
How could i do this? help...
Use something like
foreach (DataRow row in myDataTable.Rows)
if (row ...) // implement your condition here
myDataTable.Rows.Remove(row);
C# code here because you ask for C# in your title.
You have to provide the DeleteCommand
of the DataAdapter
. Then you can use DataRow.Delete
to change it's row-state to RowState.Deleted
which causes the dataadapter to delete it from database when you use DataAdapter.Update(myDataTable)
.
To find the rows that you want to delete you can use Linq-To-DataSet
:
Dim deleteCommand = new SqlCommand("DELETE FROM ...", myLocalConnection)
mySqlDataAdapter.DeleteCommand = deleteCommand
Dim query = From row In myDataTable
Where row.Field(Of String)("ColumnName") = "Delete-Condition"
For Each row As DataRow in query
row.Delete()
Next
mySqlDataAdapter.Update(myDataTable)
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