VB.NET DATAGRIDVIEW写入数据库

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) '这个自己写去

con.Open()

Dim cmd As New SqlCommand(sqlStr, con)

Try

Dim result As Integer = cmd.ExecuteNonQuery()

If result >0 Then

MsgBox "添加数据成功"

Else

MsgBox "添加数据失败"

End If

Catch (ex As Exception)

MsgBox "添加数据过程发生异常,原因:" &ex.Message

End Try

End Sub

你这是向sql后台数据库写数据吗?

sqldataadapter1.update 改须指定有效的updatecommand,我一直没有看到

给你个例子你看吧:

'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(此行必须,要不不能与后台同步,并且后面调用update会出错)

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

Module1.MyDataAdaPter.InsertCommand = Module1.Mycommand

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

MsgBox("增加数据成功！！")

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