vb.net 如何在 gridview devexpress 中单击时在 pictureedit 和 picturebox 中显示图像

Question

我想在点击gridview devexpress时显示picturedit和picturebox中的图片。我想在一个pictureedit和一个picturebox中点击path1列和path2列的单元格值时显示图像。

Public Class Form1
    Private WithEvents dt As New DataTable
    Dim Path As String = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) & "\PRODUCT.mdb"
    Dim cn = "provider=Microsoft.Jet.OLEDB.4.0; data source=" & Path
    Private Images As Hashtable = New Hashtable()

    Private Sub LoadDataGridView()
        Try
            dt = New DataTable
            Dim query = "select Code,Path1,Path2 FROM ITEM"

            Using adapter As New OleDbDataAdapter(query, cn.ToString)
                adapter.Fill(dt)
            End Using
            Me.GridControl1.DataSource = dt
        Catch myerror As OleDbException
            MessageBox.Show("Error: " & myerror.Message)
        Finally
        End Try
    End Sub

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        LoadDataGridView()
    End Sub

     Private Sub GridView1_RowCellClick(sender As Object, e As RowCellClickEventArgs) Handles GridView1.RowCellClick
        Dim view As GridView = TryCast(sender, GridView)
        Dim path1 As String = view.GetFocusedRowCellValue("Path1").ToString
        Dim path2 As String = view.GetFocusedRowCellValue("Path2").ToString
        PictureEdit1.Image = Image.FromStream(New MemoryStream(File.ReadAllBytes(path1)), True, False)
        PictureEdit1.Image = Image.FromStream(New MemoryStream(File.ReadAllBytes(path2)), True, False)
    End Sub
End Class

Capturegridview18022022

Captureerror18022022

Answer 1

使用 Click 事件而不是 RowCellClick

Private Sub GridView1_Click(sender As Object, e As RowCellClickEventArgs) Handles GridView1.Click
    Dim path1 As String = (GridView1.GetRowCellValue(GridView1.FocusedRowHandle,"Path1"))
    Dim path2 As String = (GridView1.GetRowCellValue(GridView1.FocusedRowHandle,"Path2"))
    PictureEdit1.Image = Image.FromStream(New MemoryStream(File.ReadAllBytes(path1)), True, False)
    PictureEdit1.Image = Image.FromStream(New MemoryStream(File.ReadAllBytes(path2)), True, False)
End Sub

Answer 2

访问https://docs.devexpress.com/WindowsForms/DevExpress.XtraGrid.Views.Grid.GridView.RowCellClick

Private Sub GridView1_RowCellClick(sender As Object, e As RowCellClickEventArgs) Handles GridView1.RowCellClick
Dim view As GridView = TryCast(sender, GridView)
If e.Column.FieldName = "Path1" Then
            Dim path1 As String = view.GetRowCellValue(e.RowHandle, e.Column).ToString
            PictureEdit1.Image = Image.FromStream(New MemoryStream(File.ReadAllBytes(path1)), True, False)
        Else
            If e.Column.FieldName = "Path2" Then
                Dim path2 As String = view.GetRowCellValue(e.RowHandle, e.Column).ToString
                PictureEdit1.Image = Image.FromStream(New MemoryStream(File.ReadAllBytes(path2)), True, False)
            End If

        End If
    End Sub

vb.net 如何在 gridview devexpress 中单击时在 pictureedit 和 picturebox 中显示图像

How to display image in pictureedit and picturebox when clicked in gridview devexpress in vb.net

vb.net

gridview

devexpress

picturebox