Asp.net 网络打印 – WebBrowser 控件技术打印

来源：互联网发布：南邮软件编辑：程序博客网时间：2024/05/02 00:56

---资源来源于Microsfot WebCast

1. 创建一个Class_Print 的类，类中可能创建两个Function.

-Function 1:

Public Function DGPrint(ByVal ds As DataSet) As String

Dim myDataTable As New DataTable

myDataTable = ds.Tables(0)

Dim myRow As Integer = myDataTable.Rows.Count

Dim myCol As Integer = myDataTable.Columns.Count

Dim sb As New System.Text.StringBuilder

Dim colHeaders As String = "<html><body><object ID='WebBrowser' WIDTH=0 HEIGHT=0 CLASSID='CLSID:8856F961-340A-11D0-A96B-00C04FD705A2'VIEWASTEXT></object><table><tr>"

For lint_index_0 As Integer = 0 To myCol - 1

colHeaders += "<td>" + myDataTable.Columns(lint_index_0).ColumnName.ToString() + "</td>"

colHeaders += "<tr>"

sb.Append(colHeaders)

For lint_index_1 As Integer = 0 To myRow - 1

sb.Append("<tr>")

For lint_index_2 As Integer = 0 To myCol - 1

sb.Append("<td>")

sb.Append(myDataTable.Rows(lint_index_1).Item(lint_index_2).ToString.Trim)

sb.Append("</td>")

sb.Append("</tr>")

sb.Append("</table></body></html>")

colHeaders = sb.ToString

'// WebBrowser.ExecWB(6,1) ----打印

'// WebBrowser.ExecWB(8,1) ----打印设置

'// WebBrowser.ExecWB(7,1) ----打印预览

'// WebBrowser.ExecWB(6,6) ----直接打印

colHeaders += "<script language='javascript'>WebBrowser.ExecWB(6,1); window.opener=null;window.close();</script>"

Return colHeaders

End Function

-Function 2

Public Function DGPrint(ByVal dg As DataGrid) As String

Dim myRow As Integer = dg.Items.Count

Dim myCol As Integer = dg.Columns.Count

Dim sb As New System.Text.StringBuilder

Dim colHeaders As String = "<html><body><object ID='WebBrowser' WIDTH=0 HEIGHT=0 CLASSID='CLSID:8856F961-340A-11D0-A96B-00C04FD705A2'VIEWASTEXT></object><table><tr>"

For lint_index_0 As Integer = 0 To myCol - 1

colHeaders += "<td>" + dg.Columns(lint_index_0).HeaderText.ToString() + "</td>"

colHeaders += "<tr>"

sb.Append(colHeaders)

For lint_index_1 As Integer = 0 To myRow - 1

sb.Append("<tr>")

For lint_index_2 As Integer = 0 To myCol - 1

sb.Append("<td>")

sb.Append(dg.Items(lint_index_1).Cells(lint_index_2).Text.Trim())

sb.Append("</td>")

sb.Append("</tr>")

sb.Append("</table></body></html>")

colHeaders = sb.ToString

'// WebBrowser.ExecWB(6,1) ----打印

'// WebBrowser.ExecWB(8,1) ----打印设置

'// WebBrowser.ExecWB(7,1) ----打印预览

'// WebBrowser.ExecWB(6,6) ----直接打印

colHeaders += "<script language='javascript'>WebBrowser.ExecWB(6,1); window.opener=null;window.close();</script>"

Return colHeaders

End Function

2. Web 页面的打印调用：

Private Sub Print_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Print.Click

Dim iobj_print As New PrintClass

Dim ds As New DataSet

ds.Tables.Add(idtb_temp)

Response.Write(iobj_print.DGPrint(ds))

End Sub