以下代码在导出datagridview数据时尝试使其与左侧的标题垂直以及每个旁边的文本都不起作用。一旦翻转,用户就会点击button1导出到excel。
Imports System.Data.DataTable
Imports System.IO
Imports Microsoft.Office.Interop
Public Class Form1
Dim table As New DataTable(0)
Public checkBoxList As List(Of CheckBox)
Private ds As DataSet = Nothing
Private dt As DataTable = Nothing
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
ds = New DataSet()
dt = New DataTable()
ds.Tables.Add("Table")
Dim my_DataView As DataView = ds.Tables(0).DefaultView
DataGridView1.DataSource = my_DataView
table.Columns.Add("Forename", Type.GetType("System.String"))
table.Columns.Add("Surname", Type.GetType("System.String"))
table.Columns.Add("Food", Type.GetType("System.String"))
checkBoxList = New List(Of CheckBox) From {CheckBox1, CheckBox2, CheckBox3, CheckBox4}
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim currentDataSet As DataSet = FlipDataSet(ds) ' Flip the DataSet
Dim values As String = "" &
String.Join(" & ", checkBoxList _
.Where(Function(cb) cb.Checked).Select(Function(cb) cb.Text))
' use values for placing into your DataGridView
CheckBox1.Text = values
CheckBox2.Text = values
CheckBox3.Text = values
CheckBox4.Text = values
table.Rows.Add(TextBox1.Text, TextBox2.Text, values.ToString)
DataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill
DataGridView1.RowTemplate.Height = 100
DataGridView1.AllowUserToAddRows = False
DataGridView1.DataSource = table
'Save to excel with headers
Dim ExcelApp As Object, ExcelBook As Object
Dim ExcelSheet As Object
Dim i As Integer
Dim j As Integer
'create object of excel
ExcelApp = CreateObject("Excel.Application")
ExcelBook = ExcelApp.WorkBooks.Add
ExcelSheet = ExcelBook.WorkSheets(1)
With ExcelSheet
For Each column As DataGridViewColumn In DataGridView1.Columns
.cells(1, column.Index + 1) = column.HeaderText
Next
For i = 1 To Me.DataGridView1.RowCount
.cells(i + 1, 1) = Me.DataGridView1.Rows(i - 1).Cells("Forename").Value
For j = 1 To DataGridView1.Columns.Count - 1
.cells(i + 1, j + 1) = DataGridView1.Rows(i - 1).Cells(j).Value
Next
Next
End With
ExcelApp.Visible = True
'
ExcelSheet = Nothing
ExcelBook = Nothing
ExcelApp = Nothing
End Sub
Private Sub DataGridView1_CellContentClick(sender As Object, e As DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
End Sub
Public Function FlipDataSet(ByVal my_DataSet As DataSet) As DataSet
Dim ds As New DataSet()
For Each dt As DataTable In my_DataSet.Tables
Dim table As New DataTable()
For i As Integer = 0 To dt.Rows.Count
table.Columns.Add(Convert.ToString(i))
Next
Dim r As DataRow
For k As Integer = 0 To dt.Columns.Count - 1
r = table.NewRow()
r(0) = dt.Columns(k).ToString()
For j As Integer = 1 To dt.Rows.Count
r(j) = dt.Rows(j - 1)(k)
Next
table.Rows.Add(r)
Next
ds.Tables.Add(table)
Next
Return ds
End Function
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim currentDataSet As DataSet = FlipDataSet(ds) ' Flip the DataSet
Dim currentDataView As DataView = currentDataSet.Tables(0).DefaultView
DataGridView1.DataSource = currentDataView
Button2.Enabled = False
End Sub
End Class
单击button2时,应使用以下内容翻转数据;
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles
Button2.Click
Dim currentDataSet As DataSet = FlipDataSet(ds) ' Flip the DataSet
Dim currentDataView As DataView = currentDataSet.Tables(0).DefaultView
DataGridView1.DataSource = currentDataView
Button2.Enabled = False
End Sub
End Class
我试过调试但是我似乎找不到任何错误?它允许我在选择复选框的同时在文本框中插入数据,当单击按钮1导出它时工作正常,但它不会翻转数据。
请有人建议如何解决这个问题,因为我在6月8日有一个演示文稿,这些数据需要自动翻转
答案 0 :(得分:0)
已经回答了:
Imports Microsoft.Office.Interop
Imports System.Runtime.InteropServices
Public Class Form1
Private ds As DataSet = Nothing
Private dt As DataTable = Nothing
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
DataGridView1.AllowUserToAddRows = False
dt = New DataTable("MyTable")
dt.Columns.Add("Forename", Type.GetType("System.String"))
dt.Columns.Add("Surname", Type.GetType("System.String"))
dt.Columns.Add("Food", Type.GetType("System.String"))
ds = New DataSet
ds.Tables.Add(dt)
Dim my_DataView As DataView = ds.Tables("MyTable").DefaultView
DataGridView1.DataSource = my_DataView
End Sub
Private Sub Button_AddRowData_Click(sender As Object, e As EventArgs) Handles Button_AddRowData.Click
Dim foods As String = String.Join(" & ", CheckedListBox1.CheckedItems.Cast(Of String))
dt.Rows.Add(New Object() {TextBox_Forename.Text, TextBox_Surname.Text, foods})
End Sub
Private Sub Button_FlipAndSave_Click(sender As Object, e As EventArgs) Handles Button_FlipAndSave.Click
FlipAndSave(ds.Tables("MyTable"))
End Sub
Private Sub FlipAndSave(table As DataTable)
Dim ExcelApp As New Excel.Application
Dim WrkBk As Excel.Workbook = ExcelApp.Workbooks.Add()
Dim WrkSht As Excel.Worksheet = CType(WrkBk.Worksheets(1), Excel.Worksheet)
With WrkSht
For ci As Integer = 0 To table.Columns.Count - 1
.Cells(ci + 1, 1) = table.Columns(ci).ColumnName
Next
For ri As Integer = 0 To table.Rows.Count - 1
For ci As Integer = 0 To table.Columns.Count - 1
.Cells(ci + 1, ri + 2) = table.Rows(ri).Item(ci).ToString
Next
Next
End With
ExcelApp.Visible = True
'use this lines if you want to automatically save the WorkBook
'WrkBk.SaveAs("C:\Some Folder\My Workbook.xlsx") '(.xls) if you have an old version of Excel
'ExcelApp.Quit() 'use this line if you want to close the Excel Application
ReleaseObject(ExcelApp)
ReleaseObject(WrkBk)
ReleaseObject(WrkSht)
End Sub
Private Sub ReleaseObject(obj As Object)
Marshal.ReleaseComObject(obj)
obj = Nothing
End Sub
End Class