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vb.net快速定位 vbnet addressof
小程序：扫一扫查出行【扫一扫了解最新限行尾号】
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VB.net中，BindingNavigator的定位问题
你的思路完全正确
Dim curpos As Integer
curpos = BindingSource1.Position
BindingSource1.Position = curpos
VB.net 如何查询某值在DataSet的哪一行哪一列？
行列循环查询就可以了阿
假如 DataSet1是你的 DataSet，见下面的代码
Dim db As DataTable = DataSet1.Tables("表名")
Dim c As Integer = db.Columns.Count - 1
Dim r As Integer = db.Rows.Count - 1
For i = 0 To r
For j = 0 To c
If db.Rows(r).Item(i) = "A" Then
MsgBox("行是:" i "列是:" j)
End If
Next
Next
平面坐标二维定位vb 或vb.net
窗体上放一个textbox 两条line 一个label 代码粘贴 运行 即见效果
'*************************************************************************
'**工程名称vb.net快速定位：平面座标
'**说 明：小鸟工作室 版权所有2007 - 2008(C)1
'**创 建 人：秋色烽火
'**日 期：2007-12-18 14:08:15
'**版 本：V1.0.0
'*************************************************************************
Const DPITCH = 300 '点距
Dim WithEvents oControlx1 As Line
Dim WithEvents oControlx2 As Line
Dim WithEvents oControly1 As Line
Dim WithEvents oControly2 As Line
Dim WithEvents oControlShape As Shape
Dim WithEvents oControlPixinfo As Label
Dim DPCound%, PixID%, PixBackColor, dotx%, doty%
Private Sub Form_Load()
Me.Caption = "平面座标 - by 秋色烽火[小鸟工作室]"
Me.Height = 9300
Me.Width = 9300
Line1.X1 = 150
Line1.X2 = Me.Width - 150
Line1.Y1 = Me.Height / 2
Line1.Y2 = Line1.Y1
Line2.Y1 = 150
Line2.Y2 = Me.Height - 150
Line2.X1 = Me.Width / 2
Line2.X2 = Line2.X1
Label1.Width = 255
Label1.Height = 255
Label1.AutoSize = ture
Label1.BackStyle = 0
Label1.FontItalic = True
Label1.FontBold = True
Label1.FontSize = 10
Label1.ForeColor = HFF
Label1.Caption = "O"
Label1.Left = Me.Width / 2 + Label1.Width - 100
Label1.Top = Me.Height / 2 - Label1.Height
Text1.Text = ""
Call AddLine
Text1.ToolTipText = "请输入整数座标(x,y) 中间用英文逗号分隔~~~,双击文本框或回车开始标注" vbCrLf " 右击显示帮助信息 " vbCrLf "输入座标请介乎于" DPCound \ 2 "至" -1 * DPCound \ 2 "之间~~"
PixID = 0
End Sub
Sub AddLine()
DPCound = (Me.Width - 300) / DPITCH - 2
For i = DPCound \ 2 + 1 To DPCound
Set oControlx1 = Controls.Add("VB.Line", "lineW" i, Me)
Set oControlx2 = Controls.Add("VB.Line", "lineW" DPCound \ 2 - (i - (DPCound \ 2 + 1)), Me)
Set oControly1 = Controls.Add("VB.Line", "lineH" i, Me)
Set oControly2 = Controls.Add("VB.Line", "lineH" DPCound \ 2 - (i - (DPCound \ 2 + 1)), Me)
With oControlx1
.Visible = True '显示
.X1 = Me.Width / 2 + (i - DPCound \ 2) * DPITCH
.X2 = Me.Width / 2 + (i - DPCound \ 2) * DPITCH
.Y1 = Me.Height / 2 - 60
.Y2 = Me.Height / 2 + 60
End With
With oControlx2
.Visible = True '显示
.X1 = Me.Width / 2 - (i - DPCound \ 2) * DPITCH
.X2 = Me.Width / 2 - (i - DPCound \ 2) * DPITCH
.Y1 = Me.Height / 2 - 60
.Y2 = Me.Height / 2 + 60
End With
With oControly1
.Visible = True '显示
.Y1 = Me.Height / 2 + (i - DPCound \ 2) * DPITCH
.Y2 = Me.Height / 2 + (i - DPCound \ 2) * DPITCH
.X1 = Me.Width / 2 - 60
.X2 = Me.Width / 2 + 60
End With
With oControly2
.Visible = True '显示
.Y1 = Me.Height / 2 - (i - DPCound \ 2) * DPITCH
.Y2 = Me.Height / 2 - (i - DPCound \ 2) * DPITCH
.X1 = Me.Width / 2 - 60
.X2 = Me.Width / 2 + 60
End With
Next
End Sub
Sub AddPix()
If InStr(Text1.Text, ",") 0 Then
If IsNumeric(Mid$(Text1.Text, 1, InStr(Text1.Text, ",") - 1)) And IsNumeric(Mid$(Text1.Text, InStr(Text1.Text, ",") + 1, Len(Text1.Text))) Then
If CInt(Mid$(Text1.Text, 1, InStr(Text1.Text, ",") - 1)) = DPCound \ 2 And CInt(Mid$(Text1.Text, 1, InStr(Text1.Text, ",") - 1)) = -1 * DPCound \ 2 Then
PixID = PixID + 1
Set oControlShape = Controls.Add("VB.Shape", "Pix" PixID, Me)
Set oControlPixinfo = Controls.Add("VB.Label", "Pixinfo" PixID, Me)
With oControlShape
.Visible = True '显示
.Shape = 3
'.BorderColor = HFF
.BackColor = HFF 'RGB(Int(Rnd * 255), Int(Rnd * 255), Int(Rnd * 255)) 'HFF
.BackStyle = 1
.BorderStyle = 0
.Width = 75
.Height = 75
.Left = Me.Width / 2 + CInt(Mid$(Text1.Text, 1, InStr(Text1.Text, ",") - 1)) * DPITCH
.Top = Me.Height / 2 - CInt(Mid$(Text1.Text, InStr(Text1.Text, ",") + 1, Len(Text1.Text))) * DPITCH
dotx = .Left
doty = .Top
PixBackColor = .BackColor
End With
With oControlPixinfo
.Visible = True '显示
.BackStyle = 0
' .FontItalic = True
'.FontBold = True
.FontSize = 9
.ForeColor = HFF 'PixBackColor 'HFF
.Caption = "[" PixID "]" CStr(CInt(Mid$(Text1.Text, 1, InStr(Text1.Text, ",") - 1))) "," CInt(Mid$(Text1.Text, InStr(Text1.Text, ",") + 1, Len(Text1.Text)))
.Width = 1000
.Height = 255
.Left = dotx
.Top = doty - .Height
.AutoSize = ture
End With
Text1.Text = ""
Else
MsgBox "输入座标请介乎于" DPCound \ 2 "至" -1 * DPCound \ 2 "之间~~", , "错误"
Text1.Text = ""
End If
Else
MsgBox "座标请使用数字输入", , "错误"
Text1.Text = ""
End If
Else
MsgBox "输入vb.net快速定位的座标请使用英文逗号 , 进行分隔", , "错误"
Text1.Text = ""
End If
End Sub
Sub init()
If PixID 0 Then
If MsgBox("确实要清空所有标注点吗vb.net快速定位？", vbOKCancel + vbInformation + vbDefaultButton2 + vbMsgBoxSetForeground + vbSystemModal, "信息！") = vbOK Then
For i = 1 To PixID
Controls.Remove "Pix" i
Controls.Remove "Pixinfo" i
Next
PixID = 0
End If
End If
End Sub
Private Sub Text1_DblClick()
Call AddPix
End Sub
Private Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer)
If KeyCode = 13 Then
Call AddPix
End If
End Sub
Private Sub Text1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button = 2 Then
MsgBox "请输入整数座标(x,y) 中间用英文逗号分隔~~~,双击文本框或回车开始标注" vbCrLf "输入座标请介乎于" DPCound \ 2 "至" -1 * DPCound \ 2 "之间~~" vbCrLf "中键清空所有创建的座标", , "帮助"
End If
If Button = 4 Then
Call init
End If
End Sub
'好玩的东东
'****************************
'如果加上下面的就好罗
'定时设为500
'Dim a, b As Integer
'a = 14
'b = 14
'Private Sub Timer1_Timer()
'Text1.Text = a "," b
'a = a - 1
'b = b - 1
'Call Text1_KeyDown(13, 1)
'End Sub
vb.net如何在datagridview中定位单元格
您只要会操作单元格中vb.net快速定位的数据自然就会了如下vb.net快速定位：Public Class Form1 Dim conn As Data.OleDb.OleDbConnection
Dim da As Data.OleDb.OleDbDataAdapter
Dim ds As Data.DataSet Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
DataGridView1.AllowUserToOrderColumns = False
conn = New OleDb.OleDbConnection( Provider=Microsoft.Jet.OleDb.4.0;Data Source=D:\data.mdb ) 假设表中有两项: price 和 quaty
conn.Open()
da = New OleDb.OleDbDataAdapter( SELECT * FROM 表1 , conn)
ds = New Data.DataSet
da.Fill(ds)
conn.Close()
DataGridView1.DataSource = ds.Tables(0)
DataGridView1.Columns.Add( sum , sum ) 加入一项 sum
For i As Int32 = 0 To DataGridView1.Rows.Count - 1
DataGridView1.Rows(i).Cells(2).Value = DataGridView1.Rows(i).Cells(0).Value * DataGridView1.Rows(i).Cells(1).Value 把前两项的数据相乘vb.net快速定位，放到第三项中
Next
End Sub End Class
求助 ，arcgis 空点定位，以及属性表定位，新手用的是VB.NET
你这句是什么意思？
pFilter.WhereClause = ("" ListBox1.Text "= " TextBox1.Text "").ToString
难道要查找所有的吗？
设断电跟踪一下吧.看看那pFeature是否为空？
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