回答編集履歴
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追記
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Chart Samples
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[http://surferonwww.info/BlogEngine/post/2016/02/14/chart-samples.aspx](http://surferonwww.info/BlogEngine/post/2016/02/14/chart-samples.aspx)
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**【追記】**
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質問に対する私のコメントで、
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> PIVOT 関係演算子を利用してクロス集計と書きましたが SUM 句を使ってできるかもしれません。ただし、CSV + ADO.NET + JET で可能かどうかは分かりませんが。SQL Server を使った場合の例を回答欄に書いておきます。
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と書きましたが、それを以下に書いておきます。
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以下の記事は積み上げ棒グラフ (SeriesChartType.StackedColumn) ですが、それを普通の棒グラフ (SeriesChartType.Column) にしたものが質問者さんが望む形のものになると思います。
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［ASP.NET］チャート・コントロールで積み上げ棒グラフを作成するには？［3.5、C#、VB］
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[http://www.atmarkit.co.jp/fdotnet/dotnettips/1004aspchartstack/aspchartstack.html](http://www.atmarkit.co.jp/fdotnet/dotnettips/1004aspchartstack/aspchartstack.html)
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以下のコードで望む形になると思います。
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```
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using System.Data.SqlClient;
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using System.Windows.Forms.DataVisualization.Charting;
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namespace WindowsFormsChart
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{
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public partial class Form2 : Form
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{
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public Form2()
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{
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InitializeComponent();
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}
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private DataTable CreateDataTable()
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{
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string connString =
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@"Data Source=(local)\sqlexpress;Initial Catalog=Database;Integrated Security=True";
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string selectQuery =
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@"SELECT
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Month,
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SUM(CASE WHEN Name = N'三吉' THEN Sales ELSE 0 END) AS 三吉,
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SUM(CASE WHEN Name = N'春日' THEN Sales ELSE 0 END) AS 春日,
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SUM(CASE WHEN Name = N'東雲' THEN Sales ELSE 0 END) AS 東雲,
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SUM(CASE WHEN Name = N'府中' THEN Sales ELSE 0 END) AS 府中,
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SUM(CASE WHEN Name = N'広島' THEN Sales ELSE 0 END) AS 広島
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FROM Shop GROUP BY Month";
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using (SqlConnection connection = new SqlConnection(connString))
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{
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SqlDataAdapter adapter = new SqlDataAdapter();
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adapter.SelectCommand = new SqlCommand(selectQuery, connection);
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DataTable table = new DataTable();
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adapter.Fill(table);
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return table;
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}
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}
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private void Form2_Load(object sender, EventArgs e)
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{
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Chart chart = new Chart()
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{
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Name = "chart1",
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Width = 600,
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DataSource = CreateDataTable()
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};
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this.Controls.Add(chart);
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Legend legend = new Legend()
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{
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DockedToChartArea = "ChartArea1",
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IsDockedInsideChartArea = false,
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Name = "Legend1"
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};
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chart.Legends.Add(legend);
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Series series = new Series()
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{
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Name = "三吉",
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ChartType = SeriesChartType.Column,
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Legend = "Legend1",
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XValueMember = "Month",
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YValueMembers = "三吉"
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};
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chart.Series.Add(series);
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series = new Series()
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{
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Name = "春日",
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ChartType = SeriesChartType.Column,
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Legend = "Legend1",
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XValueMember = "Month",
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YValueMembers = "春日"
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};
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chart.Series.Add(series);
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series = new Series()
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{
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Name = "東雲",
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ChartType = SeriesChartType.Column,
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Legend = "Legend1",
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XValueMember = "Month",
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YValueMembers = "東雲"
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};
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chart.Series.Add(series);
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series = new Series()
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{
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Name = "府中",
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ChartType = SeriesChartType.Column,
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Legend = "Legend1",
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XValueMember = "Month",
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YValueMembers = "府中"
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};
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chart.Series.Add(series);
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series = new Series()
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{
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Name = "広島",
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ChartType = SeriesChartType.Column,
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Legend = "Legend1",
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XValueMember = "Month",
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YValueMembers = "広島"
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};
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chart.Series.Add(series);
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ChartArea chartArea = new ChartArea()
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{
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Name = "ChartArea1",
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AxisY = new Axis() { Title = "売上高" },
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AxisX = new Axis() { Title = "売上月" }
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};
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chart.ChartAreas.Add(chartArea);
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}
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}
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}
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```
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