質問編集履歴
3
## 追記の修正
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以下を参考に書いてみました。
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期待通りの動作になりました。
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https://stackoverflow.com/questions/2825771/how-can-we-do-pagination-in-datagridview-in-winform
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総ページ数を表示すべきところが、1ページの項目数になってしまいます。
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あと少しだと思うんですが...
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コード修正
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this.dataGridView1.DataSource = tables[bindingSource.Position];
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this.bindingSource.DataSource = tables[bindingSource.Position];
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}
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}
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情報の追加
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https://dobon.net/vb/bbs/log3-29/17906.html
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## 追記
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以下を参考に書いてみました。
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https://stackoverflow.com/questions/2825771/how-can-we-do-pagination-in-datagridview-in-winform
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総ページ数を表示すべきところが、1ページの項目数になってしまいます。
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あと少しだと思うんですが...
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```C#
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//
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using System;
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65
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using System.Collections.Generic;
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66
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67
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using System.ComponentModel;
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68
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using System.Data;
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70
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using System.Drawing;
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72
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73
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using System.Linq;
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74
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75
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using System.Text;
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77
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using System.Threading.Tasks;
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78
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79
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using System.Windows.Forms;
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80
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81
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using System.IO;
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82
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83
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84
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85
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namespace DataGridPaging
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86
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87
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{
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88
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89
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public partial class Form1 : Form
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90
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{
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93
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public DataTable dataTable = new DataTable();
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public BindingSource bindingSource = new BindingSource();
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public BindingList<DataTable> tables = new BindingList<DataTable>();
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98
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99
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100
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101
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// 1ページで表示する行数
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public int pageSize = 1000;
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105
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106
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public Form1()
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108
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{
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110
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InitializeComponent();
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113
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114
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115
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// データサンプル(10000行)
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// 以下の型式で10000行
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// 1,行1,hoge1,fuga2,aaaaaaaaaaaaaaaaaaaa1
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ReadData();
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}
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125
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public void ReadData()
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{
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this.dataTable.Columns.Add("列1", typeof(string));
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this.dataTable.Columns.Add("列2", typeof(string));
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this.dataTable.Columns.Add("列3", typeof(string));
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this.dataTable.Columns.Add("列4", typeof(string));
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this.dataTable.Columns.Add("列5", typeof(string));
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141
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142
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using(StreamReader sr = new StreamReader(@"data.csv", System.Text.Encoding.GetEncoding("shift_jis")))
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{
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while(!sr.EndOfStream)
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{
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var line = sr.ReadLine();
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var datas = line.Split(',');
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155
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156
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157
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dataTable.Rows.Add(datas[0], datas[1], datas[2], datas[3], datas[4]);
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158
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159
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}
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160
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+
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161
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}
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162
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+
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163
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164
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+
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165
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}
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166
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+
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167
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+
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168
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+
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169
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private void button1_Click(object sender, EventArgs e)
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170
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+
|
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171
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{
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172
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173
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SetPagedDataSource();
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174
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175
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}
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176
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+
|
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177
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+
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178
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179
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private void SetPagedDataSource()
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180
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181
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{
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182
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183
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DataTable dt = null;
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184
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185
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int counter = 1;
|
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186
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+
|
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187
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+
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188
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+
|
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189
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+
foreach (DataRow dr in this.dataTable.Rows)
|
|
190
|
+
|
|
191
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+
{
|
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192
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+
|
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193
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+
if (counter == 1)
|
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194
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+
|
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195
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+
{
|
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196
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+
|
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197
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+
dt = dataTable.Clone();
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198
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+
|
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199
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+
tables.Add(dt);
|
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200
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+
|
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201
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+
}
|
|
202
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+
|
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203
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+
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204
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+
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205
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+
dt.Rows.Add(dr.ItemArray);
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206
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+
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207
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+
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208
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+
|
|
209
|
+
if (pageSize < ++counter)
|
|
210
|
+
|
|
211
|
+
{
|
|
212
|
+
|
|
213
|
+
counter = 1;
|
|
214
|
+
|
|
215
|
+
}
|
|
216
|
+
|
|
217
|
+
}
|
|
218
|
+
|
|
219
|
+
|
|
220
|
+
|
|
221
|
+
this.bindingNavigator1.BindingSource = bindingSource;
|
|
222
|
+
|
|
223
|
+
bindingSource.DataSource = tables;
|
|
224
|
+
|
|
225
|
+
bindingSource.PositionChanged += bindingSource_PositionChanged;
|
|
226
|
+
|
|
227
|
+
bindingSource_PositionChanged(bindingSource, EventArgs.Empty);
|
|
228
|
+
|
|
229
|
+
}
|
|
230
|
+
|
|
231
|
+
|
|
232
|
+
|
|
233
|
+
private void bindingSource_PositionChanged(object sender, EventArgs e)
|
|
234
|
+
|
|
235
|
+
{
|
|
236
|
+
|
|
237
|
+
this.dataGridView1.DataSource = tables[bindingSource.Position];
|
|
238
|
+
|
|
239
|
+
this.bindingSource.DataSource = tables[bindingSource.Position];
|
|
240
|
+
|
|
241
|
+
}
|
|
242
|
+
|
|
243
|
+
}
|
|
244
|
+
|
|
245
|
+
}
|
|
246
|
+
|
|
247
|
+
|
|
248
|
+
|
|
249
|
+
```
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