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When we export data out from Database we may have requirements of exporting data from Datatable to CSV because CSV is a simple file format that is widely supported. CSV (The comma-separated values) file format is a set of file formats used to store tabular data in which numbers and text are stored in plain textual form that can be read in a text editor. Lines in the text file represent rows of a table, and commas in a line separate what are fields in the table row.
Here we mainly discuss how to Export Datatable to CSV with Spire.DataExport for .NET.
Download Spire.DataExport (or Spire.Office) with .NET Framework together. Only 2 Simple steps you can finish the whole datatable to CSV exporting process.
Step 1: Load Data Information
Before exporting data from DataTable, we should load data information from data source. And select which information we need export. Through DataGridVew, we even can preview and modify data information. So, in this step, our job is to prepare data which is about to be exported out.
private void btnLoad_Click(object sender, EventArgs e)
{
using (OleDbConnection oleDbConnection = new OleDbConnection())
{
oleDbConnection.ConnectionString = this.textBox1.Text;
OleDbCommand oleDbCommand = new OleDbCommand();
oleDbCommand.CommandText = this.textBox2.Text;
oleDbCommand.Connection = oleDbConnection;
using (OleDbDataAdapter da = new OleDbDataAdapter(oleDbCommand))
{
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
}
}
}
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Step 2: Set Export into CSV
Spire.DataExport allows user to export data into most popular file formats including MS Excel, MS Word, HTML, PDF, XML, CSV, DBF, DIF, etc. Here we need set it as CSV format. Spire.DataExport will create a new CSV file and through DataGridView export data into CSV file. You also can rename the file as you like.
private void btnRUN_Click(object sender, EventArgs e)
{
TXTExport CSVExport = new TXTExport();
CSVExport.DataSource = Spire.DataExport.Common.ExportSource.DataTable;
CSVExport.DataTable = this.dataGridView1.DataSource as DataTable;
CSVExport.ActionAfterExport = Spire.DataExport.Common.ActionType.OpenView;
CSVExport.FileName = "CSV0721.csv";
CSVExport.SaveToFile();
}
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A bar chart in Excel is a data visualization tool that presents data using horizontal bars. The length of each bar in the chart is proportional to the value it represents. Using a bar chart, you can easily compare values across two or more categories. In this article, you will learn how to create bar chart in Excel in C# and VB.NET using Spire.XLS for .NET.
Install Spire.XLS for .NET
To begin with, you need to add the DLL files included in the Spire.XLS for .NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.XLS
Create Bar Chart in Excel in C# and VB.NET
The following are the main steps to create a bar chart:
- Create an instance of Workbook class.
- Get the first worksheet by its index (zero-based) though Workbook.Worksheets[sheetIndex] property.
- Add some data to the worksheet.
- Add a clustered bar chart to the worksheet using Worksheet.Charts.Add(ExcelChartType.BarClustered) method.
- Set data range for the chart through Chart.DataRange property.
- Set position, title, category axis title and value axis title for the chart.
- Loop through the data series of the chart, show data labels for the data points of each data series by setting the ChartSerie.DataPoints.DefaultDataPoint.DataLabels.HasValue property as true.
- Set the position of chart legend through Chart.Legend.Position property.
- Save the result file using Workbook.SaveToFile() method.
- C#
- VB.NET
using Spire.Xls;
using Spire.Xls.Charts;
using System.Drawing;
namespace CreateBarChart
{
class Program
{
static void Main(string[] args)
{
//Create a Workbook instance
Workbook workbook = new Workbook();
//Get the first worksheet
Worksheet sheet = workbook.Worksheets[0];
//Set sheet name
sheet.Name = "Bar Chart";
//Hide gridlines
sheet.GridLinesVisible = false;
//Add data to the the worksheet
sheet.Range["A1"].Value = "Country";
sheet.Range["A2"].Value = "Cuba";
sheet.Range["A3"].Value = "Mexico";
sheet.Range["A4"].Value = "France";
sheet.Range["A5"].Value = "German";
sheet.Range["B1"].Value = "Jun";
sheet.Range["B2"].NumberValue = 6000;
sheet.Range["B3"].NumberValue = 8000;
sheet.Range["B4"].NumberValue = 9000;
sheet.Range["B5"].NumberValue = 8500;
sheet.Range["C1"].Value = "Aug";
sheet.Range["C2"].NumberValue = 3000;
sheet.Range["C3"].NumberValue = 2000;
sheet.Range["C4"].NumberValue = 2300;
sheet.Range["C5"].NumberValue = 4200;
//Set cell styles
sheet.Range["A1:C1"].Style.Font.IsBold = true;
sheet.Range["A2:C2"].Style.KnownColor = ExcelColors.LightYellow;
sheet.Range["A3:C3"].Style.KnownColor = ExcelColors.LightGreen1;
sheet.Range["A4:C4"].Style.KnownColor = ExcelColors.LightOrange;
sheet.Range["A5:C5"].Style.KnownColor = ExcelColors.LightTurquoise;
//Set cell borders
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeTop].Color = Color.FromArgb(0, 0, 128);
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeTop].LineStyle = LineStyleType.Thin;
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeBottom].Color = Color.FromArgb(0, 0, 128);
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeBottom].LineStyle = LineStyleType.Thin;
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeLeft].Color = Color.FromArgb(0, 0, 128);
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeLeft].LineStyle = LineStyleType.Thin;
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeRight].Color = Color.FromArgb(0, 0, 128);
sheet.Range["A1:C5"].Style.Borders[BordersLineType.EdgeRight].LineStyle = LineStyleType.Thin;
//Set number format
sheet.Range["B2:C5"].Style.NumberFormat = "\"$\"#,##0";
//Add a clustered bar chart to the worksheet
Chart chart = sheet.Charts.Add(ExcelChartType.BarClustered);
//Set data range for the chart
chart.DataRange = sheet.Range["A1:C5"];
chart.SeriesDataFromRange = false;
//Set position of the chart
chart.LeftColumn = 1;
chart.TopRow = 6;
chart.RightColumn = 11;
chart.BottomRow = 29;
//Set and format chart title
chart.ChartTitle = "Sales Report";
chart.ChartTitleArea.IsBold = true;
chart.ChartTitleArea.Size = 12;
//Set and format category axis title
chart.PrimaryCategoryAxis.Title = "Country";
chart.PrimaryCategoryAxis.Font.IsBold = true;
chart.PrimaryCategoryAxis.TitleArea.IsBold = true;
chart.PrimaryCategoryAxis.TitleArea.TextRotationAngle = 90;
//Set and format value axis title
chart.PrimaryValueAxis.Title = "Sales(in USD)";
chart.PrimaryValueAxis.HasMajorGridLines = false;
chart.PrimaryValueAxis.MinValue = 1000;
chart.PrimaryValueAxis.TitleArea.IsBold = true;
//Show data labels for data points
foreach (ChartSerie cs in chart.Series)
{
cs.Format.Options.IsVaryColor = true;
cs.DataPoints.DefaultDataPoint.DataLabels.HasValue = true;
}
//Set position of chart legend
chart.Legend.Position = LegendPositionType.Top;
//Save the result file
workbook.SaveToFile("CreateBarChart.xlsx", ExcelVersion.Version2016);
}
}
}
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DBF is a format created by Ashton-Tate and can be recognized by ACT, Lipper, FoxPro, Arago, Wordtech, Xbase and other programs related with Database. Although MS Excel has been the most popular data form software application, DBF format data form files still used widely. So sometimes we may have requirements to export data from datatable to DBF. And with Spire.DataExport, we can export datatable to DBF through DataGridView effortlessly!
Download Spire.DataExport (or Spire.Office) with .NET Framework together. Only 2 Simple steps you can finish the whole datatable to DBF exporting process.
Step 1: Load Data Information
Before exporting data from DataTable, we should load data information from data source. And select which information we need export. Through DataGridVew, we even can preview and modify data information. So, in this step, our job is to prepare data which are about to be exported out.
private void btnLoad_Click(object sender, EventArgs e)
{
using (OleDbConnection oleDbConnection = new OleDbConnection())
{
oleDbConnection.ConnectionString = this.textBox1.Text;
OleDbCommand oleDbCommand = new OleDbCommand();
oleDbCommand.CommandText = this.textBox2.Text;
oleDbCommand.Connection = oleDbConnection;
using (OleDbDataAdapter da = new OleDbDataAdapter(oleDbCommand))
{
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
}
}
}
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Step 2: Set Export into DBF
Spire.DataExport allows user to export data into most popular file formats including MS Excel, MS Word, HTML, PDF, XML, CSV, DBF, DIF, etc. Here we need set it as DBF format. Spire.DataExport will create a new DBF file and through DataGridView export data into DBF file. You also can rename the file as you like.
private void btnRun_Click(object sender, EventArgs e)
{
Spire.DataExport.DBF.DBFExport DBFExport = new Spire.DataExport.DBF.DBFExport();
DBFExport.DataSource = Spire.DataExport.Common.ExportSource.DataTable;
DBFExport.DataTable = this.dataGridView1.DataSource as DataTable;
DBFExport.ActionAfterExport = Spire.DataExport.Common.ActionType.OpenView;
DBFExport.FileName = "DBF0401.dbf";
DBFExport.SaveToFile();
}
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