Question

我需要从员工数据库中读取记录并显示所选项目（不在Gridview中） - 除了存储在varbinary（max）中的图像外，这很好。我需要逐步完成记录 - 前进和后退。有一些记录没有图像。我在使用每个记录的数据集来理解转换方法时遇到了问题。

我正在使用visual studio 2008和thryng在Windows窗体应用程序中显示记录。

非常感谢帮助。

以下是我的一些代码：

Public Class Form1

    Private Sub GraduatesBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GraduatesBindingNavigatorSaveItem.Click
        Me.Validate()
        Me.GraduatesBindingSource.EndEdit()
        Me.TableAdapterManager.UpdateAll(Me.Graduates_DatabaseDataSet)

    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'TODO: This line of code loads data into the 'Graduates_DatabaseDataSet.Graduates' table. You can move, or remove it, as needed.
        Me.GraduatesTableAdapter.Fill(Me.Graduates_DatabaseDataSet.Graduates)
    End Sub

    Private Sub GraduatesBindingNavigator_RefreshItems(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GraduatesBindingNavigator.RefreshItems

    End Sub

    Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

    End Sub

    Private Sub PhotographLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

    End Sub
    Private Sub SurnameTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SurnameTextBox.TextChanged

    End Sub

    Private Sub FillBysurnameToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Try
            Me.GraduatesTableAdapter.FillBysurname(Me.Graduates_DatabaseDataSet.Graduates, SsnameToolStripTextBox.Text)
        Catch ex As System.Exception
            System.Windows.Forms.MessageBox.Show(ex.Message)
        End Try

    End Sub
End Class

Answer 1

使用PictureBox并为其Image属性分配一个Image对象，该对象是使用Image.FromStream构建的Graduates表中的varbinary（max）字段创建的。

不幸的是，您可以使用没有简单的设计器时间绑定，您将不得不将事件挂钩到数据绑定货币管理器PositionChanged事件。

Varbinary（max）图像Visual Studio 2008

1 个答案: