vb.net代码绑定硬件 vb combox 绑定数据

Vb.net 为什么会出现无法绑定到 DataSource 的属性或列。参数名: dataMember错误？

可能的错误：

窗体内有其他控件，导致Me.Controls(i)并不指代文本框，仅仅是猜测

建议用Panel容器装入所有文本框，然后使用Panel1.Controls(i)

运行出错时，Try Catch或暂停查看当前 i 的值，找到出问题的字段，我估计字段名称有问题

，数据库中不存在该字段或其他原因。

vb.net中的combobox数据绑定问题

使用SelectedIndexChanged事件

Private Sub cbxBigDept_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged

dim strBM as string

strBM=cbxBigDept.selectedValue ' 获得当前大部门名称

Dim myConn as SqlConnection = new sqlconnection(".......")

myConn.Open()

Dim myCmd as string = "select 小部门 from 小部门表 Where 大部门='" strBM "'"

Dim myAdapter as SqlDataAdapter = new SqlDataAdapter(myCmd,myConn)

Dim myDataSet as DataSet = new DataSet

myAdapter.Fill(myDataSet)

Me.cbxSonDept.DataSource = myAdapter.Table(0)

Me.cbxSonDept.ValueMember = "小部门"

myConn.Close

End Sub

祝你成功！

VB.NET中怎麼用代码实现DataGridview的数据绑定?

一般来说：连接数据库这一块都做成DLL，这样方便

在配置文件app.config中加入

//m_SqlPath

存放SQL语句的XML文件

Dim

sqlHelper

As

New

SQLHelper("LotDBConnection")

Dim

sqlRead

As

New

ResourceHelper

Dim

ht

As

New

Hashtable

Dim

strSQL

As

String

Try

'设置SQL文参数

ht.Clear()

ht.Add(ColumnName.USER_ID.ToString,

Trim(Me.txtUserID.Text))

ht.Add(ColumnName.USER_NAME.ToString,

Trim(Me.txtUserName.Text))

'数据查询

strSQL

=

sqlRead.GetSQLSentence("GetUserList",

m_SqlPath,

ht)

ds

=

sqlHelper.ExecuteDataSet(strSQL)

If

ds.Tables(0).Rows.Count

=

Then

MessageBox

.Show

("数据不存在");

Else

'数据绑定

dgvUserMeisai.DataSource

=

ds.Tables(0)

End

If

Catch

ex

As

Exception

MessageBox

.Show

(ex.Message

);

Finally

sqlHelper

=

Nothing

sqlRead

=

Nothing

ht

=

Nothing

End

Try

vb.net datagridview绑定代码

'引用命名空间

Imports System.Data.SqlClient

Imports System.Windows.Forms

Public Class frmDataShow

Private Sub btnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOk.Click

'数据库连接

Dim strConnection As String = "server=waly-pc;database=Login;uid=sa;pwd=123456;"

Dim sqlConnection1 As New SqlConnection(strConnection)

Dim dataAdapter As New SqlDataAdapter

Dim dst As New DataSet

Dim dt As New DataTable

sqlConnection1.Open() '打开数据库

Dim sql As String = "select * from UserInfo"

Dim cmd As SqlCommand = New SqlCommand(sql, sqlConnection1)

dataAdapter.SelectCommand = cmd

dataAdapter.Fill(dst, "info") '将数据库查询的数据绑定datatable

dt = dst.Tables("info")

sqlConnection1.Close() '关闭数据库

DataGridView1.AutoGenerateColumns = True '自动创建列

DataGridView1.DataSource = dt '将数据库查询的数据绑定到DataGridView1

End Sub

End Class

vb获取硬件信息的代码

tmpstr=""

set fso=createObject("scripting.filesystemObject")

Set dc = fso.Drives

for each d in dc

If d.isReady Then

    tmpstr=tmpstr "磁盘" d.DriveLetter ":" vbcrlf _

    "可用空间：" (d.AvailableSpace/1024/1024/1024) " GB" vbcrlf _

    "空余空间：" (d.FreeSpace/1024/1024/1024) " GB"  vbcrlf _

    "总空间大小：" (d.TotalSize/1024/1024/1024) " GB"  vbcrlf _

    "文件系统：" d.FileSystem vbcrlf _

    "驱动器类型：" d.DriveType vbcrlf _

    "是否就绪：" d.IsReady vbcrlf _

    "路径：" d.Path vbcrlf _

    "根目录：" d.RootFolder vbcrlf _

    "序列号：" d.SerialNumber vbcrlf _

    "共享名：" d.ShareName vbcrlf _

    "卷名：" d.VolumeName vbcrlf vbcrlf

 End If

Next

msgbox tmpstr

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