本文介绍了我怎么...我得到一个错误“0号位没有行”从这个vb.net代码的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Imports System.Data.OleDb
Imports System.Data
Public Class WithdrawandDeposit2
Dim adapt As New OleDbDataAdapter
Dim dset As New DataSet
Dim bal, num As String
Dim total As Integer
Function draw()
cn = New OleDb.OleDbConnection
With cn
.ConnectionString = "Provider=Microsoft.Ace.OLEDB.12.0;Data Source=" & Application.StartupPath & "\Maccount.accdb"
.Open()
End With
Dim dt As New DataSet("NewAccount")
'Dim rs As New OleDb.OleDbDataAdapter(" Select Samount from NewAccount where Samount = '" + lblamount.Text + "'", cn)
Dim rs As New OleDb.OleDbDataAdapter(" Select * from NewAccount where Saccountno = '" + TextBox1.Text + "'", cn)
rs.Fill(dt)
If .Tables(dt).rows.count > 0 Then
bal = dt.Tables(0).Rows(0)(6).ToString()
num = dt.Tables(0).Rows(0)(0).ToString()
TextBox2.Text = dt.Tables(0).Rows(0)(2).ToString()
Return 0
End If
End Function
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Val(WithBox.Text) > bal Then
LowerBalance.Show()
ElseIf Me.WithBox.Text = "" Then
Errorform1.Show()
Else
total = bal - Val(WithBox.Text)
Dim dbcommand As String = "update NewAccount set Samount = '" & total & "'where AccountName='" & TextBox1.Text & "'"
adapt = New OleDbDataAdapter(dbcommand, cn)
dset = New DataSet
adapt.Fill(dset)
'rs.Dispose()
'cn.Close()
Call draw()
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Close()
Transactions.Show()
End Sub
Private Sub WithdrawandDeposit2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Call draw()
TextBox2.Enabled = False
End Sub
End Class
我尝试过:
i在bal = dt.tables(0).rows(0)(6)中出错.ToString()
What I have tried:
i am getting an error in bal = dt.tables(0).rows(0)(6).ToString()
推荐答案
If dt.Tables(0).Rows.Count > 0 Then
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