vb.net 寫數(shù)據(jù)庫

你這是向sql后臺數(shù)據(jù)庫寫數(shù)據(jù)嗎?

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sqldataadapter1.update 改須指定有效的updatecommand,我一直沒有看到

給你個例子你看吧:

'首先指定有效的UpdateCommand

sqlstr = "insert into Playlist(PlayName,PlayPath)values('" TextBox4.Text.Trim "','" TextBox5.Text.Trim "')"

Module1.Mycommand.CommandText = sqlstr

'增加新一行(此行必須,要不不能與后臺同步,并且后面調(diào)用update會出錯)

Module1.MyDataSet.Tables("Music").Rows.Add()

Module1.MyDataAdaPter.InsertCommand = Module1.Mycommand

Module1.MyDataAdaPter.Update(Module1.MyDataSet, "Music")

MsgBox("增加數(shù)據(jù)成功?。?)

VB.NET DATAGRIDVIEW寫入數(shù)據(jù)庫

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

Dim sqlStr As String = "insert into tb values("

Dim i As Integer

For i = 0 To DataGridView1.Columns.Count - 1

sqlStr = "'" DataGridView1.Rows(DataGridView1.Rows.Count - 1).Cells(i) "'"

If i DataGridView1.Columns.Count - 1 Then sqlStr = ","

Next

sqlStr = ")"

Dim con As New SqlConnection(connectionString) '這個自己寫去

con.Open()

Dim cmd As New SqlCommand(sqlStr, con)

Try

Dim result As Integer = cmd.ExecuteNonQuery()

If result 0 Then

MsgBox "添加數(shù)據(jù)成功"

Else

MsgBox "添加數(shù)據(jù)失敗"

End If

Catch (ex As Exception)

MsgBox "添加數(shù)據(jù)過程發(fā)生異常,原因:" ex.Message

End Try

End Sub

vb.net如何在單擊回車鍵時將數(shù)據(jù)寫入數(shù)據(jù)庫?

用SQL數(shù)據(jù)庫。VB.NET是微軟公司在2002年推出的一種開發(fā)基于.Net平臺應用程序的開發(fā)語言，vb.net在單擊回車鍵時將數(shù)據(jù)寫入數(shù)據(jù)庫需要用SQL數(shù)據(jù)庫。

vb.net 怎么寫入數(shù)據(jù)庫數(shù)據(jù)

使用.net下的system.sql.sqlclint類庫下的sqlconnent;sqlcommand類進行寫入操作