VB.NET 文本框已更改但仍保持初始值

Question

我以前从未遇到过这种情况：

我有一系列文本框。这些框的文本在页面加载时设置。然后我有一个提交按钮，它调用一个子来用文本框中的新值（文本）更新表格。问题是它保留了原始文本而不是文本框中当前的文本。有人遇到过这个吗？或者知道如何绕过它？

这是我提交按钮事件的代码：

 Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnSubmit.Click

    Dim Emails As Integer = txtEmails.Text
    Dim Calls As Integer = txtCalls.Text
    Dim Contacts As Integer = txtContacts.Text
    Dim Tasks As Integer = txtTasks.Text
    Dim Meetings As Integer = txtMeetings.Text
    Dim Proposals As Integer = txtProposals.Text
    Dim Points As Integer = txtPoint.Text

    Dim dt As New DataTable()
    Try
        connection.Open()

        Dim sqlCmd As New SqlCommand("UPDATE tblActivityParameters SET Emails = " & Emails & ", Calls = " & Calls & ", Contacts=" & Contacts & ", Tasks =" & Tasks & ", Meetings=" & Meetings & ", Proposals=" & Proposals & ",Points =" & Points, connection)

        Dim sqlDa As New SqlDataAdapter(sqlCmd)

        sqlDa.Fill(dt)
        lblError.Visible = True
        lblError.Text = "Parameters successfully updated"
    Catch SQLExp As SqlException
        lblError.Visible = True
        lblError.Text = "SQL Error: " + SQLExp.Message.ToString()
    Finally
        connection.Close()
    End Try
    GetParameters()
End Sub

干杯，

琼斯

Answer 1

请检查您是否确定已在页面加载时检查了 IspostBack。

if not(Me.IsPostBack) then

'fetch the values for initial load

end if

对不起，如果我是 C# 人，语法错误。

HTH