ByteScout Spreadsheet SDK - VB.NET - Calculations and Spreadsheet as Database - ByteScout

ByteScout Spreadsheet SDK – VB.NET – Calculations and Spreadsheet as Database

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calculations and spreadsheet as database in VB.NET and ByteScout Spreadsheet SDK

Write code in VB.NET to make calculations and spreadsheet as database with this How-To tutorial

Sample source codes below will show you how to cope with a difficult task, for example, calculations and spreadsheet as database in VB.NET. ByteScout Spreadsheet SDK was made to help with calculations and spreadsheet as database in VB.NET. ByteScout Spreadsheet SDK is the SDK to create, read, modify and calculate spreadsheets. Formula calculations are supported, import and export to and from JSON, CSV, XML, databases, arrays.

VB.NET code snippet like this for ByteScout Spreadsheet SDK works best when you need to quickly implement calculations and spreadsheet as database in your VB.NET application. This VB.NET sample code should be copied and pasted into your application’s code editor. Then just compile and run it to see how it works. Further enhancement of the code will make it more vigorous.

ByteScout Spreadsheet SDK free trial version is available for download from our website. Free trial also includes programming tutorials along with source code samples.

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Form1.Designer.vb
      
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ Partial Class Form1 Inherits System.Windows.Forms.Form 'Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected Overrides Sub Dispose(ByVal disposing As Boolean) If disposing AndAlso components IsNot Nothing Then components.Dispose() End If MyBase.Dispose(disposing) End Sub 'Required by the Windows Form Designer Private components As System.ComponentModel.IContainer 'NOTE: The following procedure is required by the Windows Form Designer 'It can be modified using the Windows Form Designer. 'Do not modify it using the code editor. <System.Diagnostics.DebuggerStepThrough()> _ Private Sub InitializeComponent() Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(Form1)) Me.GroupBox1 = New System.Windows.Forms.GroupBox Me.Button4 = New System.Windows.Forms.Button Me.TextBox4 = New System.Windows.Forms.TextBox Me.Label3 = New System.Windows.Forms.Label Me.TextBox3 = New System.Windows.Forms.TextBox Me.Label4 = New System.Windows.Forms.Label Me.TextBox2 = New System.Windows.Forms.TextBox Me.Label2 = New System.Windows.Forms.Label Me.TextBox1 = New System.Windows.Forms.TextBox Me.Label1 = New System.Windows.Forms.Label Me.Button1 = New System.Windows.Forms.Button Me.Button2 = New System.Windows.Forms.Button Me.Button3 = New System.Windows.Forms.Button Me.Label5 = New System.Windows.Forms.Label Me.GroupBox1.SuspendLayout() Me.SuspendLayout() ' 'GroupBox1 ' Me.GroupBox1.Controls.Add(Me.Button4) Me.GroupBox1.Controls.Add(Me.TextBox4) Me.GroupBox1.Controls.Add(Me.Label3) Me.GroupBox1.Controls.Add(Me.TextBox3) Me.GroupBox1.Controls.Add(Me.Label4) Me.GroupBox1.Controls.Add(Me.TextBox2) Me.GroupBox1.Controls.Add(Me.Label2) Me.GroupBox1.Controls.Add(Me.TextBox1) Me.GroupBox1.Controls.Add(Me.Label1) Me.GroupBox1.Location = New System.Drawing.Point(12, 6) Me.GroupBox1.Name = "GroupBox1" Me.GroupBox1.Size = New System.Drawing.Size(166, 212) Me.GroupBox1.TabIndex = 0 Me.GroupBox1.TabStop = False ' 'Button4 ' Me.Button4.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(204, Byte)) Me.Button4.Location = New System.Drawing.Point(9, 175) Me.Button4.Name = "Button4" Me.Button4.Size = New System.Drawing.Size(135, 23) Me.Button4.TabIndex = 14 Me.Button4.Text = "Recalculate" Me.Button4.UseVisualStyleBackColor = True ' 'TextBox4 ' Me.TextBox4.Location = New System.Drawing.Point(9, 149) Me.TextBox4.Name = "TextBox4" Me.TextBox4.Size = New System.Drawing.Size(135, 20) Me.TextBox4.TabIndex = 13 ' 'Label3 ' Me.Label3.AutoSize = True Me.Label3.Location = New System.Drawing.Point(6, 94) Me.Label3.Name = "Label3" Me.Label3.Size = New System.Drawing.Size(39, 13) Me.Label3.TabIndex = 12 Me.Label3.Text = "Label3" ' 'TextBox3 ' Me.TextBox3.Location = New System.Drawing.Point(9, 110) Me.TextBox3.Name = "TextBox3" Me.TextBox3.Size = New System.Drawing.Size(135, 20) Me.TextBox3.TabIndex = 11 ' 'Label4 ' Me.Label4.AutoSize = True Me.Label4.Location = New System.Drawing.Point(6, 133) Me.Label4.Name = "Label4" Me.Label4.Size = New System.Drawing.Size(39, 13) Me.Label4.TabIndex = 10 Me.Label4.Text = "Label4" ' 'TextBox2 ' Me.TextBox2.Location = New System.Drawing.Point(9, 71) Me.TextBox2.Name = "TextBox2" Me.TextBox2.Size = New System.Drawing.Size(135, 20) Me.TextBox2.TabIndex = 9 ' 'Label2 ' Me.Label2.AutoSize = True Me.Label2.Location = New System.Drawing.Point(6, 55) Me.Label2.Name = "Label2" Me.Label2.Size = New System.Drawing.Size(39, 13) Me.Label2.TabIndex = 8 Me.Label2.Text = "Label2" ' 'TextBox1 ' Me.TextBox1.Location = New System.Drawing.Point(9, 32) Me.TextBox1.Name = "TextBox1" Me.TextBox1.Size = New System.Drawing.Size(135, 20) Me.TextBox1.TabIndex = 7 ' 'Label1 ' Me.Label1.AutoSize = True Me.Label1.Location = New System.Drawing.Point(6, 16) Me.Label1.Name = "Label1" Me.Label1.Size = New System.Drawing.Size(39, 13) Me.Label1.TabIndex = 6 Me.Label1.Text = "Label1" ' 'Button1 ' Me.Button1.Location = New System.Drawing.Point(184, 12) Me.Button1.Name = "Button1" Me.Button1.Size = New System.Drawing.Size(100, 23) Me.Button1.TabIndex = 1 Me.Button1.Text = "Load from XLS" Me.Button1.UseVisualStyleBackColor = True ' 'Button2 ' Me.Button2.Location = New System.Drawing.Point(184, 41) Me.Button2.Name = "Button2" Me.Button2.Size = New System.Drawing.Size(100, 23) Me.Button2.TabIndex = 2 Me.Button2.Text = "Save to XLS" Me.Button2.UseVisualStyleBackColor = True ' 'Button3 ' Me.Button3.Location = New System.Drawing.Point(184, 70) Me.Button3.Name = "Button3" Me.Button3.Size = New System.Drawing.Size(100, 23) Me.Button3.TabIndex = 3 Me.Button3.Text = "View in Excel" Me.Button3.UseVisualStyleBackColor = True ' 'Label5 ' Me.Label5.Location = New System.Drawing.Point(9, 236) Me.Label5.Name = "Label5" Me.Label5.Size = New System.Drawing.Size(275, 113) Me.Label5.TabIndex = 4 Me.Label5.Text = resources.GetString("Label5.Text") ' 'Form1 ' Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.ClientSize = New System.Drawing.Size(294, 372) Me.Controls.Add(Me.Label5) Me.Controls.Add(Me.Button3) Me.Controls.Add(Me.Button2) Me.Controls.Add(Me.Button1) Me.Controls.Add(Me.GroupBox1) Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow Me.Name = "Form1" Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen Me.Text = "Simple Database" Me.GroupBox1.ResumeLayout(False) Me.GroupBox1.PerformLayout() Me.ResumeLayout(False) End Sub Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox Friend WithEvents TextBox3 As System.Windows.Forms.TextBox Friend WithEvents Label4 As System.Windows.Forms.Label Friend WithEvents TextBox2 As System.Windows.Forms.TextBox Friend WithEvents Label2 As System.Windows.Forms.Label Friend WithEvents TextBox1 As System.Windows.Forms.TextBox Friend WithEvents Label1 As System.Windows.Forms.Label Friend WithEvents TextBox4 As System.Windows.Forms.TextBox Friend WithEvents Label3 As System.Windows.Forms.Label Friend WithEvents Button4 As System.Windows.Forms.Button Friend WithEvents Button1 As System.Windows.Forms.Button Friend WithEvents Button2 As System.Windows.Forms.Button Friend WithEvents Button3 As System.Windows.Forms.Button Friend WithEvents Label5 As System.Windows.Forms.Label End Class

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Form1.vb
      
Imports Bytescout.Spreadsheet Imports System.Diagnostics Public Class Form1 Dim _spreadsheet As Spreadsheet Private Sub LoadXLS() Dim worksheet As Worksheet _spreadsheet = New Spreadsheet() _spreadsheet.LoadFromFile("Database.xls") worksheet = _spreadsheet.WorkBook.Worksheets(0) Label1.Text = worksheet.Cell("A1").Value TextBox1.Text = worksheet.Cell("A2").Value Label2.Text = worksheet.Cell("B1").Value TextBox2.Text = worksheet.Cell("B2").Value Label3.Text = worksheet.Cell("C1").Value TextBox3.Text = worksheet.Cell("C2").Formula Label4.Text = "Calculated value of C2" worksheet.Cell("C2").Calculate() TextBox4.Text = worksheet.Cell("C2").Value End Sub Private Sub SaveXLS() Dim worksheet As Worksheet worksheet = _spreadsheet.WorkBook.Worksheets(0) worksheet.Cell("A2").Value = System.Convert.ToInt32(TextBox1.Text) worksheet.Cell("B2").Value = System.Convert.ToInt32(TextBox2.Text) worksheet.Cell("C2").Formula = TextBox3.Text Try System.IO.File.Delete("Database.xls") Catch ex As Exception End Try _spreadsheet.SaveAs("Database.xls") End Sub Private Sub Form1_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing SaveXLS() _spreadsheet.Close() End Sub Private Sub ReCalculate() Dim worksheet As Worksheet worksheet = _spreadsheet.Workbook.Worksheets(0) worksheet.Cell("A2").Value = System.Convert.ToInt32(TextBox1.Text) worksheet.Cell("B2").Value = System.Convert.ToInt32(TextBox2.Text) worksheet.Cell("C2").Formula = TextBox3.Text worksheet.Cell("C2").Calculate() TextBox4.Text = worksheet.Cell("C2").Value End Sub Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click ReCalculate() End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load LoadXLS() End Sub Private Sub TextBox_Recalculate(ByVal sender As System.Object, ByVal e As System.EventArgs) ReCalculate() End Sub Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click ' open in default spreadsheets viewer/editor SaveXLS() Try Process.Start("Database.xls") Catch End Try End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click LoadXLS() MessageBox.Show("Loaded from Database.xls") End Sub Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click SaveXLS() MessageBox.Show("Saved into Database.xls") End Sub End Class

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