VB.Net程序设计:图片存储到SQLServer数据库里的界面代码。

这两天写的一个图片存储到SQLServer数据库里的界面代码。

主要界面：

代码说明：

ItemImgClass：是一个封装的对图片信息记录的操作，如更新、插入删除记录，获取所有记录。

ItemImgDataModel：是一个封装的图片信息记录的数据模块。

添加记录：用存储过程-有插入理图片数据。但默认值为null
更新记录：用存储过程-没有处理图片数据。

图片的常规操作：选择图片，插入图片，更新图片。删除图片。

Imports System.IO Public Class FrmItemImg Dim OPCls As New ItemImgClass Dim DM As ItemImgDataModel Dim ImgPathMain,ImgPathSnd As String Dim fs As FileStream Private Sub LoadDataTB() Dim tb As New DataTable tb = OPCls.GetTableCN() Me.Dv.DataSource = tb.DefaultView End Sub Private Sub ShowMsg() Me.ShowMsg("") End Sub Private Sub ShowMsg(ByVal msg As String) Me.LB.Text = String.Format("消息:{0}",msg) End Sub Function BoxDM(ByVal iType As Integer) As ItemImgDataModel Dim dm As New ItemImgDataModel dm.ItemNo = Me.TxtBoxItemNo.Text dm.Years = Me.CmbYears.Text dm.BigType = Me.CmbBigType.Text dm.SmlType = Me.CmbSmlType.Text dm.DescripEN = Me.TxtBoxDescripEN.Text dm.DescripCN = Me.TxtBoxDescripCN.Text dm.UpdateTime = Me.DTPImgUpdateTime.Text dm.ImgFileName = Me.TxtBoxImgFileName.Text dm.ImgFileName2nd = Me.TxtBoxImgFileName2nd.Text '添加记录：存储过程-有插入理图片数据。但默认值为null '更新记录：存储过程-没有处理图片数据。 dm.ImgBinary = Nothing dm.ImgBinary2nd = Nothing Select Case iType Case 1 Case 2 'If ImgPathMain > "" Then ' 'dm.ImgBinary = getImgBinary(1) ' fs = New FileStream(ImgPathMain,FileMode.Open) ' Dim bt(fs.Length) As Byte ' fs.Read(bt,fs.Length) ' dm.ImgBinary = bt ' fs.Close() 'End If 'If ImgPathSnd = "" Then ' 'dm.ImgBinary2nd = getImgBinary(2) ' fs = New FileStream(ImgPathSnd,fs.Length) ' dm.ImgBinary = bt ' fs.Close() 'End If End Select dm.Remarks = Me.TxtBoxRemarks.Text Return dm End Function Private Function ChkSaveData() As Boolean If Me.TxtBoxItemNo.Text = "" Then ShowMsg("输入图片的货号!") Return False End If If Me.PicBoxMain.Image Is Nothing And Me.PicBoxSnd.Image Is Nothing Then If MsgBox("没有选择要保存的图片，是否继续保存记录。",MsgBoxStyle.YesNo + MsgBoxStyle.DefaultButton2,"保存图片记录") = MsgBoxResult.No Then Return False End If End If Return True End Function Private Sub BtAddNewRs_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles BtAddNewRs.Click Me.TxtBoxItemNo.Text = "" Me.CmbYears.Text = "" Me.CmbBigType.Text = "" Me.CmbSmlType.Text = "" Me.TxtBoxDescripEN.Text = "" Me.TxtBoxDescripCN.Text = "" Me.DTPImgUpdateTime.Value = Now.Date() Me.TxtBoxRemarks.Text = "" Me.PicBoxMain.Image = Nothing Me.PicBoxSnd.Image = Nothing Me.TxtBoxImgFileName.Text = "" Me.TxtBoxImgFileName2nd.Text = "" ClearImgPathNull() End Sub Private Sub BindCmbBoxTB() Dim TbYear,TbBigType,TbSmlType As New DataTable Dim YearCls As New YearClass Dim ImgTypeCls As New ImgTypeClass TbYear = YearCls.GetTable() TbBigType = ImgTypeCls.GetBigTypeTB() TbSmlType = ImgTypeCls.GetSmlTypeTB() Me.CmbYears.DataSource = TbYear.DefaultView Me.CmbYears.DisplayMember = "Years" Me.CmbYears.ValueMember = "Years" Me.CmbYears.SelectedIndex = -1 YearCls = Nothing Me.CmbBigType.DataSource = TbBigType.DefaultView Me.CmbBigType.DisplayMember = "Types" Me.CmbBigType.ValueMember = "Types" Me.CmbBigType.SelectedIndex = -1 Me.CmbSmlType.DataSource = TbSmlType.DefaultView Me.CmbSmlType.DisplayMember = "Types" Me.CmbSmlType.ValueMember = "Types" Me.CmbSmlType.SelectedIndex = -1 ImgTypeCls = Nothing End Sub Private Sub ClearImgPathNull() ImgPathMain = "" ImgPathSnd = "" End Sub Private Sub BtSaveRs_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles BtSaveRs.Click If ChkSaveData() = False Then Exit Sub Dim dm As ItemImgDataModel If OPCls.CheckRsExist(Me.TxtBoxItemNo.Text) Then '更新,不更新图片内容。 dm = BoxDM(1) If OPCls.AddAndUpdateImg(dm) Then OPCls.UpdateImg(dm.ItemNo,ImgPathMain,ImgPathSnd) ClearImgPathNull() ShowMsg("添加或更新图片信息成功。") LoadDataTB() Else ClearImgPathNull() ShowMsg("添加或更新图片信息失败。") End If Else '插入,插入图片内容。 dm = BoxDM(2) If OPCls.AddAndUpdateImg(dm) Then OPCls.UpdateImg(dm.ItemNo,ImgPathSnd) ClearImgPathNull() ShowMsg("添加或更新图片信息成功。") 'RefreshDvRs() Else ShowMsg("添加或更新图片信息失败。") ClearImgPathNull() End If End If End Sub Private Sub FrmItemImg_Load(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles MyBase.Load LoadDataTB() BindCmbBoxTB() End Sub Private Sub BtDeleteRs_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles BtDeleteRs.Click If Me.TxtBoxItemNo.Text > "" Then If OPCls.Delete(Me.TxtBoxItemNo.Text) Then ShowMsg("图片信息数据删除成功。") Else ShowMsg("图片信息数据删除失败。") End If End If End Sub Private Sub BtClose_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles BtClose.Click Me.Close() End Sub Private Sub Dv_CellClick(ByVal sender As Object,ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles Dv.CellClick If e.RowIndex > -1 Then Dim dm As New ItemImgDataModel dm = OPCls.GetItemImgDM(Dv.Rows(e.RowIndex).Cells(0).Value) Me.TxtBoxItemNo.Text = Dv.Rows(e.RowIndex).Cells(0).Value Me.CmbYears.Text = Dv.Rows(e.RowIndex).Cells(1).Value Me.CmbBigType.Text = Dv.Rows(e.RowIndex).Cells(2).Value Me.CmbSmlType.Text = Dv.Rows(e.RowIndex).Cells(3).Value Me.TxtBoxDescripEN.Text = Dv.Rows(e.RowIndex).Cells(4).Value Me.TxtBoxDescripCN.Text = Dv.Rows(e.RowIndex).Cells(5).Value Me.DTPImgUpdateTime.Value = Dv.Rows(e.RowIndex).Cells(6).Value Me.TxtBoxImgFileName.Text = Dv.Rows(e.RowIndex).Cells(7).Value Me.TxtBoxImgFileName2nd.Text = Dv.Rows(e.RowIndex).Cells(8).Value Me.TxtBoxRemarks.Text = Dv.Rows(e.RowIndex).Cells(9).Value '--加载相应的图片。 If dm.ImgBinary IsNot Nothing Then Dim ms As New MemoryStream(dm.ImgBinary) Me.PicBoxMain.Image = Image.FromStream(ms) ms.Close() ms.Dispose() Else Me.PicBoxMain.Image = Nothing End If If dm.ImgBinary2nd IsNot Nothing Then Dim ms As New MemoryStream(dm.ImgBinary2nd) Me.PicBoxSnd.Image = Image.FromStream(ms) ms.Close() ms.Dispose() Else Me.PicBoxSnd.Image = Nothing End If End If End Sub Private Sub TSMIPikNewImg_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles TSMIPikNewImg.Click Dim p As String = "" p = ChooseAFile("选择一个图片","图片文件|*.jpg;*.gif;*.png;*.bmp") If Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxMain.Name Then ImgPathMain = "" If p > "" Then ImgPathMain = p Me.TxtBoxImgFileName.Text = IO.Path.GetFileName(ImgPathMain).ToLower Dim fs As FileStream = New FileStream(ImgPathMain,FileMode.Open) Me.PicBoxMain.Image = Image.FromStream(fs) fs.Close() fs.Dispose() Else ShowMsg("图片路径或图片文件无效。") End If ElseIf Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxSnd.Name Then ImgPathSnd = "" If p > "" Then ImgPathSnd = p Me.TxtBoxImgFileName2nd.Text = IO.Path.GetFileName(ImgPathSnd).ToLower Dim fs As FileStream = New FileStream(ImgPathSnd,FileMode.Open) Me.PicBoxSnd.Image = Image.FromStream(fs) fs.Close() fs.Dispose() Else ShowMsg("图片路径或图片文件无效。") End If End If End Sub Private Sub ShowMaxImg(ByVal iType As Integer) Select Case iType Case 1 If ImgPathMain > "" Then Dim mfrm As New FrmShowMaxImg(ImgPathMain) mfrm.ShowDialog() Else If Me.PicBoxMain.Image IsNot Nothing Then Dim mfrm As New FrmShowMaxImg(Me.PicBoxMain.Image) mfrm.ShowDialog() Else ShowMsg("没有图片数据，无法显示。") End If End If Case 2 If ImgPathSnd > "" Then Dim mfrm As New FrmShowMaxImg(ImgPathSnd) mfrm.ShowDialog() Else If Me.PicBoxSnd.Image IsNot Nothing Then Dim mfrm As New FrmShowMaxImg(Me.PicBoxSnd.Image) mfrm.ShowDialog() Else ShowMsg("没有图片数据，无法显示。") End If End If End Select End Sub Private Sub TSMIShowMaxImg_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles TSMIShowMaxImg.Click If Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxMain.Name Then ShowMaxImg(1) ElseIf Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxSnd.Name Then ShowMaxImg(2) End If End Sub Private Sub CleanImgBox(ByVal iType As Integer) Select Case iType Case 1 ImgPathMain = "" Me.PicBoxMain.Image = Nothing Case 2 ImgPathSnd = "" Me.PicBoxSnd.Image = Nothing Case 3 ImgPathSnd = "" Me.PicBoxSnd.Image = Nothing ImgPathMain = "" Me.PicBoxMain.Image = Nothing End Select End Sub Private Sub TSMICleanImgBoxData_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles TSMICleanImgBoxData.Click If Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxMain.Name Then CleanImgBox(1) ElseIf Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxSnd.Name Then CleanImgBox(2) End If End Sub Private Sub UpdateImgBoxBin(ByVal iType As Integer) If Me.TxtBoxItemNo.Text > "" Then Select Case iType Case 1 If ImgPathMain > "" Then OPCls.UpdateImg(Me.TxtBoxItemNo.Text,ImgPathMain) ShowMsg("更新图片成功。") End If Case 2 If ImgPathSnd > "" Then OPCls.UpdateImg(Me.TxtBoxItemNo.Text,ImgPathSnd) ShowMsg("更新图片成功。") End If Case 3 If ImgPathMain > "" Then OPCls.UpdateImg(Me.TxtBoxItemNo.Text,ImgPathMain) End If If ImgPathSnd > "" Then OPCls.UpdateImg(Me.TxtBoxItemNo.Text,ImgPathSnd) End If ShowMsg("更新图片成功。") End Select End If End Sub Private Sub TSMIUpdateImg_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles TSMIUpdateImg.Click If Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxMain.Name Then UpdateImgBoxBin(1) ElseIf Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxSnd.Name Then UpdateImgBoxBin(2) End If End Sub Private Sub TSMISaveImgToDisk_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles TSMISaveImgToDisk.Click Dim p As String = "" Dim filter As String = "PNG图片格式|*.png|JPG图片格式|*.jpg|GIF图片格式|*.gif|BMP位图格式|*.bmp" If Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxMain.Name Then If Me.PicBoxMain.Image IsNot Nothing Then p = SaveAFile("保存图片文件",filter) If p > "" Then Me.PicBoxMain.Image.Save(p) ShowMsg("保存图片成功!" & p) End If Else ShowMsg("没有图片数据。") End If ElseIf Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxSnd.Name Then If Me.PicBoxSnd.Image IsNot Nothing Then p = SaveAFile("保存图片文件",filter) If p > "" Then Me.PicBoxSnd.Image.Save(p) ShowMsg("保存图片成功!" & p) End If Else ShowMsg("没有图片数据。") End If End If End Sub Private Sub DeleteImgBoxBin(ByVal iType As Integer) If Me.TxtBoxItemNo.Text > "" Then Select Case iType Case 1 OPCls.DeleteImg(Me.TxtBoxItemNo.Text,DeleteImgFlag.MainImg) Case 2 OPCls.DeleteImg(Me.TxtBoxItemNo.Text,DeleteImgFlag.SndImg) Case 3 OPCls.DeleteImg(Me.TxtBoxItemNo.Text,DeleteImgFlag.AllImg) End Select End If End Sub Private Sub TSMIDeleteImg_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles TSMIDeleteImg.Click If Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxMain.Name Then DeleteImgBoxBin(1) ElseIf Me.CMenuForPicBox.SourceControl.Name.ToString = Me.PicBoxSnd.Name Then DeleteImgBoxBin(2) End If End Sub Private Sub TSMI2ImgOpCleanS_Click(ByVal sender As Object,ByVal e As System.EventArgs) Handles TSMI2ImgOpCleanS.Click CleanImgBox(3) End Sub Private Sub TSMI2ImgOpUpdateS_Click(ByVal sender As Object,ByVal e As System.EventArgs) Handles TSMI2ImgOpUpdateS.Click UpdateImgBoxBin(3) End Sub Private Sub TSMI2ImgOpDeleteS_Click(ByVal sender As Object,ByVal e As System.EventArgs) Handles TSMI2ImgOpDeleteS.Click DeleteImgBoxBin(3) End Sub Private Sub PicBoxMain_DoubleClick(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles PicBoxMain.DoubleClick ShowMaxImg(1) End Sub Private Sub PicBoxSnd_DoubleClick(ByVal sender As Object,ByVal e As System.EventArgs) Handles PicBoxSnd.DoubleClick ShowMaxImg(2) End Sub End Class

类似的旧一点的文章：http://blog.csdn.net/linjimu/archive/2008/08/01/2754893.aspx

（编辑：李大同）

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