Devexpress Xtragrid TileView
Devexpress Xtragrid TileView
提问于 2016-08-31 06:21:38
我正在使用Devexpress Xtragrid TileView模块。
基本上，我希望我的代码像这样工作：
- 在左上角文本框上输入用户成员ID，然后按load。
- 如果它们存在，那么就会出现一个瓷砖。
- 瓷砖应该包含:名称、状态、成员ID和照片。
- 如果用户再次按load (相同的ID或另一个ID)，也会添加Tile，依此类推。除非他们按下清除和加载，它应该只剩下一个最新的瓷砖。
所以，我可以制作到第三步，但我不能加载图片。
图片本身，它不是一个字节数组。这是图像路径。e.q : D:/test/1.jpg
那么，我该如何加载图片呢？
Protected Overridable Sub InitData()
Try
Dim homesTable = ds.Tables(0)
homesTable.Columns.Add("ImageCol")
For Each row_Renamed As DataRow In homesTable.Rows
Dim img As Image = Image.FromFile(row_Renamed("memberPhoto")) 'I tried this, but didn't work
row_Renamed("ImageCol") = img
Next row_Renamed
GridControl1.DataSource = homesTable
Catch
End Try
End Sub
Private Sub setupTile()
'For i = 0 To j - 1
Try
TileView1.BeginUpdate()
'TileView1.DataSource = ds.Tables(0)
TileView1.OptionsTiles.RowCount = 3
TileView1.OptionsTiles.Padding = New Padding(20)
TileView1.OptionsTiles.ItemPadding = New Padding(10)
TileView1.OptionsTiles.IndentBetweenItems = 20
TileView1.OptionsTiles.ItemSize = New Size(320, 170)
TileView1.Appearance.ItemNormal.ForeColor = Color.White
TileView1.Appearance.ItemNormal.BorderColor = Color.Transparent
'Setup tiles template
Dim leftPanel As New TileViewItemElement()
Dim splitLine As New TileViewItemElement()
Dim nameCaption As New TileViewItemElement()
Dim nameValue As New TileViewItemElement()
Dim statusCaption As New TileViewItemElement()
Dim statusValue As New TileViewItemElement()
Dim RGPCaption As New TileViewItemElement()
Dim RGPvalue As New TileViewItemElement()
Dim imageTile As New TileViewItemElement()
TileView1.TileTemplate.Add(leftPanel)
TileView1.TileTemplate.Add(splitLine)
TileView1.TileTemplate.Add(nameCaption)
TileView1.TileTemplate.Add(nameValue)
TileView1.TileTemplate.Add(statusCaption)
TileView1.TileTemplate.Add(statusValue)
TileView1.TileTemplate.Add(RGPCaption)
TileView1.TileTemplate.Add(RGPvalue)
TileView1.TileTemplate.Add(imageTile)
'
'nameValue.Text = ""
'statusValue.Text = ""
'RGPvalue.Text = ""
'imageTile.Image = Nothing
'
leftPanel.StretchVertical = True
leftPanel.Width = 190
leftPanel.TextLocation = New Point(-10, 0)
leftPanel.Appearance.Normal.BackColor = Color.FromArgb(58, 166, 101)
'
splitLine.StretchVertical = True
splitLine.Width = 3
splitLine.TextAlignment = TileItemContentAlignment.Manual
splitLine.TextLocation = New Point(190, 0)
splitLine.Appearance.Normal.BackColor = Color.White
'
nameCaption.Text = "Name"
nameCaption.TextAlignment = TileItemContentAlignment.TopLeft
nameCaption.Appearance.Normal.FontSizeDelta = -1
'
nameValue.Column = TileView1.Columns("preferredName")
nameValue.AnchorElement = nameCaption
nameValue.AnchorIndent = 2
nameValue.MaxWidth = 200
nameValue.Appearance.Normal.FontStyleDelta = FontStyle.Bold
'nameValue.Text = ds.Tables(0).Rows(i)("preferredName").ToString
'
statusCaption.Text = "Status"
statusCaption.AnchorElement = nameValue
statusCaption.AnchorIndent = 14
statusCaption.Appearance.Normal.FontSizeDelta = -1
'
statusValue.Column = TileView1.Columns("memberStatus")
statusValue.AnchorElement = statusCaption
statusValue.AnchorIndent = 2
statusValue.Appearance.Normal.FontStyleDelta = FontStyle.Bold
'statusValue.Text = ds.Tables(0).Rows(i)("memberStatus").ToString
'
RGPCaption.Text = "RGP"
RGPCaption.AnchorElement = nameValue
RGPCaption.AnchorIndent = 65
'RGPCaption.TextLocation
'RGPCaption.Appearance.Normal.FontSizeDelta = -1
RGPCaption.Appearance.Normal.Font = New Font("Segoe UI Semibold", 12.0F, System.Drawing.FontStyle.Regular)
'
RGPvalue.Column = TileView1.Columns("code")
RGPvalue.AnchorElement = RGPCaption
RGPvalue.AnchorIndent = 1
RGPvalue.TextAlignment = TileItemContentAlignment.BottomLeft
RGPvalue.Appearance.Normal.Font = New Font("Segoe UI Semilight", 25.75F, System.Drawing.FontStyle.Regular)
'RGPvalue.Text = ds.Tables(0).Rows(i)("code").ToString
'
imageTile.Column = TileView1.Columns("ImageCol")
imageTile.ImageSize = New Size(120, 170)
imageTile.ImageAlignment = TileItemContentAlignment.MiddleRight
imageTile.ImageScaleMode = TileItemImageScaleMode.Stretch
imageTile.ImageLocation = New Point(12, 0)
Catch ex As Exception
XtraMessageBox.Show(ex.Message)
Finally
TileView1.EndUpdate()
End Try
'Next
End Sub
Private Sub loadBtn_Click(sender As Object, e As EventArgs) Handles loadBtn.Click
initData()
setupTile()
End Sub
回答 1
Stack Overflow用户
发布于 2017-02-15 20:21:21
也许为时已晚，但在我的例子中，只需要从磁盘读取文件并将其分配给字节()列。
首先，表列应该是字节数组，因此替换：
homesTable.Columns.Add("ImageCol")
适用于：
homesTable.Columns.Add(New DataColumn("ImageCol", GetType(Byte)))
然后我试着替换：
row_Renamed("ImageCol") = img
适用于：
row_Renamed("ImageCol") = IO.File.ReadAllBytes(row_Renamed("memberPhoto"))
这将将磁盘文件加载到字节数组并以平铺显示。我会检查文件是否存在以避免异常。
这就是我从磁盘加载映像的方法。
希望能帮上忙。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/39242119
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