vb.net数据集筛选

VB.NET中ComboBox2如何根据ComboBox1的选择而筛选内容?请教各位 谢谢！

ComboBox1.datasouce=dt仓库数据表

ComboBox1.valuemembers="仓库代码"

选择后,可以获取：ComboBox1.selectvalue,比如,选择1号仓库,那么,对应的代码就是1,当然,这个根据你仓库表结构而定

在ComboBox1的selectindexchangge事件中,进行处理

sql可以这么写："select * from 货位数据表 where 仓库编号='+ComboBox1.selectvalue.tostring()+"'"

vb.net中如果通过dropdownlist来筛选gridview中的数据

您好！

①ddlname为dropdownlist的ID值

select * from tb where name = '"+ddlname.SelectedValue.ToString()+""

在Vb.net中用SqlDataAdapter 向导配置怎样用变量来筛选数据?

Dim myDataset As New DataSet

Dim myBindingSource As New BindingSource

Private Function CreatDataAdapter(ByVal myConn As OleDbConnection, ByVal SQLstr As String, ByVal Connstr As String) As OleDbDataAdapter

Dim adapter As New OleDbDataAdapter

Dim mySelectCommand As OleDbCommand

adapter.SelectCommand = New OleDbCommand(SQLstr, myConn)

Dim cb As OleDbCommandBuilder = New OleDbCommandBuilder(adapter)

Return adapter

End Function

Private Sub Build_DGV(ByVal SQLstr, ByVal ConnStr)

myDataset.Reset()

Dim myConn As New OleDbConnection(ConnStr)

CreatDataAdapter(myConn, SQLstr , ConnStr).Fill(myDataset)

myBindingSource.DataSource = myDataset.Tables(0)

DataGridView1.DataSource = myBindingSource

myConn.Close()

myConn.Dispose()

End Sub

在按钮事件里调用Build_DGV（）,不同的sql语句在DataGridView1里出不同的数据,控制sql语句的where条件就能筛选数据了.

另外,你还可以用myDataset.Tables(0).DefaultView.RowFilter(filetecause)

vb.net根据条件筛选表格数据

Sub?Find(ByRef?Obj?As?DataGridView,?Optional?ByVal?value?As?String?=?Nothing,?Optional?ByVal?cellIndex?As?Integer?=?1)

For?Each?i?As?DataGridViewRow?In?DataGridView1.Rows

If?value?Is?Nothing?OrElse?value?=?""?Then

i.Visible?=?True

Else

Try

If?i.Cells(cellIndex).Value?IsNot?Nothing?Then?i.Visible?=?i.Cells(cellIndex).Value?=?value

Catch?ex?As?Exception

End?Try

End?If

Next

End?Sub

Find(DataGridView1, "张三",1)

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