VB.NET中怎样拼接字符串好

vb中可以使用+连接字符串，

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也可以使用连接字符串，

建议使用连接字符串，以区别数学运算符+。

VB.net中如何给字符串组赋值?

dim Userlist() as string

redim Userlist(10)

for i=0 to 10

userlist(i) = i

Next

这样就行

vb.net字符串操作

a="@1991@1205@844@3276@1104@747@1069@0.9@4@3@104810571073

"

a=Replace(a,"@",",")

a=Replace(a,"",",")

dim b()

b=split(a,",")

vb.net从数据库读取信息填充treeview做成层次目录怎么做

给你一段我曾经写的代码，主要是生成TreeView的节点！有什么不懂的地方你就提！

Public Sub InitializeTreeView(ByVal strvXL As TreeView, ByVal vrsRecordTwo As DataSet)

Dim treBaseNodeOne As TreeNode

Dim treBaseNodeTwo As TreeNode

Dim strDWDM As String

m_rsRecordTwo = g_clsSybase.SelectSC_PD_SBCSB1()

'查找供电局信息

g_clsSybase.SelectRS_ZZJG_ZZJGDMB(m_rsRecordOne)

'添加根节点

Do While m_rsRecordOne.Read

strDWDM = m_rsRecordOne.GetString(0) '获取单位代码

treBaseNodeOne = New TreeNode

treBaseNodeOne.Text = m_rsRecordOne.GetString(1).Trim() '获取单位名称

treBaseNodeOne.Name = m_rsRecordOne.GetString(1)

treBaseNodeOne.Tag = ""

strvXL.Nodes.Add(treBaseNodeOne)

'添加树结构第二层

Dim drsTwo() As DataRow

drsTwo = m_rsRecordTwo.Tables(0).Select("SSDW='" strDWDM "' and SC__XLBM is null")

For Each dr As DataRow In drsTwo

treBaseNodeTwo = New TreeNode

treBaseNodeTwo.Text = dr.Item("XLMC").ToString.Trim

treBaseNodeTwo.Name = dr.Item("XLMC")

treBaseNodeTwo.Tag = dr.Item("XLBM")

treBaseNodeOne.Nodes.Add(treBaseNodeTwo)

Next

Loop

m_rsRecordOne.Close()

End Sub