Link Search Menu Expand Document

Import From WinForms DataGrid - VB.NET

Spreadsheet SDK sample in VB.NET demonstrating ‘Import From WinForms DataGrid’

Form1.Designer.vb
��Partial Class Form1

	''' <summary>

	''' Required designer variable.

	''' </summary>

	Private components As System.ComponentModel.IContainer = Nothing



	''' <summary>

	''' Clean up any resources being used.

	''' </summary>

	''' <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

	Protected Overrides Sub Dispose(disposing As Boolean)

		If disposing AndAlso (components IsNot Nothing) Then

			components.Dispose()

		End If

		MyBase.Dispose(disposing)

	End Sub



	#Region "Windows Form Designer generated code"



	''' <summary>

	''' Required method for Designer support - do not modify

	''' the contents of this method with the code editor.

	''' </summary>

	Private Sub InitializeComponent()

		Me.dataGrid1 = New System.Windows.Forms.DataGrid()

		Me.dataGridTableStyle1 = New System.Windows.Forms.DataGridTableStyle()

		Me.dataGridTextBoxColumn1 = New System.Windows.Forms.DataGridTextBoxColumn()

		Me.btnImport = New System.Windows.Forms.Button()

		Me.btnExport = New System.Windows.Forms.Button()

		Me.openFileDialog1 = New System.Windows.Forms.OpenFileDialog()

		DirectCast(Me.dataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()

		Me.SuspendLayout()

		' 

		' dataGrid1

		' 

		Me.dataGrid1.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) Or System.Windows.Forms.AnchorStyles.Left) Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)

		Me.dataGrid1.DataMember = ""

		Me.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText

		Me.dataGrid1.Location = New System.Drawing.Point(12, 12)

		Me.dataGrid1.Name = "dataGrid1"

		Me.dataGrid1.Size = New System.Drawing.Size(438, 308)

		Me.dataGrid1.TabIndex = 0

		Me.dataGrid1.TableStyles.AddRange(New System.Windows.Forms.DataGridTableStyle() {Me.dataGridTableStyle1})

		' 

		' dataGridTableStyle1

		' 

		Me.dataGridTableStyle1.DataGrid = Me.dataGrid1

		Me.dataGridTableStyle1.GridColumnStyles.AddRange(New System.Windows.Forms.DataGridColumnStyle() {Me.dataGridTextBoxColumn1})

		Me.dataGridTableStyle1.HeaderForeColor = System.Drawing.SystemColors.ControlText

		' 

		' dataGridTextBoxColumn1

		' 

		Me.dataGridTextBoxColumn1.Format = ""

		Me.dataGridTextBoxColumn1.FormatInfo = Nothing

		Me.dataGridTextBoxColumn1.NullText = ""

		Me.dataGridTextBoxColumn1.Width = 75

		' 

		' btnImport

		' 

		Me.btnImport.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)

		Me.btnImport.Location = New System.Drawing.Point(238, 326)

		Me.btnImport.Name = "btnImport"

		Me.btnImport.Size = New System.Drawing.Size(212, 23)

		Me.btnImport.TabIndex = 1

		Me.btnImport.Text = "Import from DataGrid to spreadsheet"

		Me.btnImport.UseVisualStyleBackColor = True

		AddHandler Me.btnImport.Click, New System.EventHandler(AddressOf Me.btnImport_Click)

		' 

		' btnExport

		' 

		Me.btnExport.Anchor = CType((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)

		Me.btnExport.Location = New System.Drawing.Point(238, 355)

		Me.btnExport.Name = "btnExport"

		Me.btnExport.Size = New System.Drawing.Size(212, 23)

		Me.btnExport.TabIndex = 2

		Me.btnExport.Text = "Export from spreadsheet to DataGrid"

		Me.btnExport.UseVisualStyleBackColor = True

		AddHandler Me.btnExport.Click, New System.EventHandler(AddressOf Me.btnExport_Click)

		' 

		' openFileDialog1

		' 

		Me.openFileDialog1.FileName = "openFileDialog1"

		Me.openFileDialog1.Filter = "Excel files (*.xls;*.xlsx)|*.xls;*.xlsx|All files|*.*"

		' 

		' Form1

		' 

		Me.AutoScaleDimensions = New System.Drawing.SizeF(6F, 13F)

		Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font

		Me.ClientSize = New System.Drawing.Size(462, 390)

		Me.Controls.Add(Me.btnExport)

		Me.Controls.Add(Me.btnImport)

		Me.Controls.Add(Me.dataGrid1)

		Me.Name = "Form1"

		Me.Text = "ImportFromWinFormsDataGrid"

		DirectCast(Me.dataGrid1, System.ComponentModel.ISupportInitialize).EndInit()

		Me.ResumeLayout(False)



	End Sub



	#End Region



	Private dataGrid1 As System.Windows.Forms.DataGrid

	Private btnImport As System.Windows.Forms.Button

	Private btnExport As System.Windows.Forms.Button

	Private openFileDialog1 As System.Windows.Forms.OpenFileDialog

	Private dataGridTableStyle1 As System.Windows.Forms.DataGridTableStyle

	Private dataGridTextBoxColumn1 As System.Windows.Forms.DataGridTextBoxColumn



End Class


Form1.vb
Imports System.Data
Imports System.Diagnostics
Imports System.IO
Imports System.Windows.Forms
Imports Bytescout.Spreadsheet

Public Partial Class Form1
	Inherits Form
	Public Sub New()
		InitializeComponent()

		dataGrid1.DataSource = GetDemoDataTable()
	End Sub

	Private Sub btnImport_Click(sender As Object, e As EventArgs)
		Cursor = Cursors.WaitCursor

		Try
			Const  fileName As String = "CSharpImportFromDataTable.xls"

			' retrieve DataTable from DataGrid
			Dim dataTable As DataTable = DirectCast(dataGrid1.DataSource, DataTable)

			' Create spreadsheet
			Dim spreadsheet As New Spreadsheet()

			' Import data from DataTable into spreadheet
			spreadsheet.ImportFromDataTable(dataTable)

			' Insert row with column captions
			Dim worksheet As Worksheet = spreadsheet.Worksheets(0)
			worksheet.Rows.Insert(0)
			For colIndex As Integer = 0 To dataTable.Columns.Count - 1
				worksheet.Cell(0, colIndex).Value = dataTable.Columns(colIndex).Caption
			Next

			' Save the spreadsheet
			If File.Exists(fileName) Then
				File.Delete(fileName)
			End If
			spreadsheet.SaveAs(fileName)

			' Close spreadsheet
			spreadsheet.Close()

			' Open the spreadsheet
			Process.Start(fileName)
		Finally
			Cursor = Cursors.[Default]
		End Try
	End Sub

	Private Sub btnExport_Click(sender As Object, e As EventArgs)
		If openFileDialog1.ShowDialog() = DialogResult.OK Then
			Cursor = Cursors.WaitCursor

			Try
				' Create spreadsheet
				Dim spreadsheet As New Spreadsheet()

				' Load spreadsheet from file
				spreadsheet.LoadFromFile(openFileDialog1.FileName)

				' Export to DataGrid
				Dim dataTable As DataTable = spreadsheet.ExportToDataTable()
				dataGrid1.DataSource = dataTable
			Finally
				Cursor = Cursors.[Default]
			End Try
		End If
	End Sub

	''' <summary>
	''' Fills a data table of the periodic table of elements.
	''' </summary>
	Private Function GetDemoDataTable() As DataTable
		Dim periodicTable As New DataTable("PeriodicTable")

		periodicTable.Columns.Add("Name", GetType(String))
		periodicTable.Columns.Add("Symbol", GetType(String))
		periodicTable.Columns.Add("AtomicNumber", GetType(Integer))

		Dim dr As DataRow = periodicTable.Rows.Add()
		dr(0) = "Hydrogen"
		dr(1) = "H"
		dr(2) = "1"

		dr = periodicTable.Rows.Add()
		dr(0) = "Helium"
		dr(1) = "He"
		dr(2) = "2"

		dr = periodicTable.Rows.Add()
		dr(0) = "Lithium"
		dr(1) = "Li"
		dr(2) = "3"

		dr = periodicTable.Rows.Add()
		dr(0) = "Beryllium"
		dr(1) = "Be"
		dr(2) = "4"

		dr = periodicTable.Rows.Add()
		dr(0) = "Boron"
		dr(1) = "B"
		dr(2) = "5"

		dr = periodicTable.Rows.Add()
		dr(0) = "Carbon"
		dr(1) = "C"
		dr(2) = "6"

		Return periodicTable
	End Function
End Class

Program.vb
Imports System.Windows.Forms

Class Program
	<STAThread> _
	Friend Shared Sub Main(args As String())
		Application.EnableVisualStyles()
		Application.SetCompatibleTextRenderingDefault(False)
		Application.Run(New Form1())
	End Sub
End Class

Download Source Code (.zip)

Return to the previous page Explore Spreadsheet SDK


Copyright © 2016 - 2021 ByteScout