如何在Datagridview C#中显示更多表

本文关键字：显示 Datagridview | 更新日期: 2023-09-27 18:28:28

我可以使用c#和mysql按日期排序在一个datagridview中显示两个或多个表吗？

例如：

|table1.salesNo|table1.salesMoney|table1.date1|

|表2.purchNo|table2.purchMoney|table2.date2|

|表2.purchNo|table2.purchMoney|table2.date3|

|table1.salesNo|table1.salesMoney|table1.date4|

|table1.salesNo|table1.salesMoney|table1.date5|

我使用了这个代码，但没有数据出现

 private MySqlDataAdapter salesinvoices, purchasesinvoices;
        private DataSet jedataset;
private void button2_Click(object sender, EventArgs e)
      {
          const string SELECT_salesinvoices = "SELECT * FROM sales_invoices";
          const string SELECT_purchasesinvoices = "SELECT * FROM purchase_invoices";

          // Compose the connection string.
          string connect_string = Publics.je_Coonn;
          // Create a DataAdapter to load the Addresses table.
          salesinvoices = new MySqlDataAdapter(SELECT_salesinvoices,
              connect_string);
          // Create a DataAdapter to load the Addresses table.
          purchasesinvoices = new MySqlDataAdapter(SELECT_purchasesinvoices,
              connect_string);
          // Create and fill the DataSet.
          jedataset = new DataSet("je_coronasalesdbDataSet");
          salesinvoices.Fill(jedataset, "sales_invoices");
          purchasesinvoices.Fill(jedataset, "purchase_invoices");
          // Bind the DataGrid to the DataSet.
          dataGridView1.DataSource = jedataset;
      }

感谢

如何在Datagridview C#中显示更多表

据我所知，DataBind（）仅适用于Web窗体。尝试仅绑定属性.DataSource。万一仍然不起作用，请尝试.Refresh（）

dataGridView1.DataSource = jedataset;
dataGridView1.Refresh();

编辑：如果你仍然没有看到任何数据添加：

dataGridView1.AutoGenerateColumns = true

（我不知道你是否已经添加了列）

编辑2：在这里找到了这个代码，我没有测试过，但你可以调整它并尝试是否有效：

private static void DemonstrateMergeTable()
{
    DataTable table1 = new DataTable("Items");
    // Add columns
    DataColumn column1 = new DataColumn("id", typeof(System.Int32));
    DataColumn column2 = new DataColumn("item", typeof(System.Int32));
    table1.Columns.Add(column1);
    table1.Columns.Add(column2);
    // Set the primary key column.
    table1.PrimaryKey = new DataColumn[] { column1 };

    // Add some rows.
    DataRow row;
    for (int i = 0; i <= 3; i++)
    {
        row = table1.NewRow();
        row["id"] = i;
        row["item"] = i;
        table1.Rows.Add(row);
    }
    // Accept changes.
    table1.AcceptChanges();
    PrintValues(table1, "Original values");
    // Create a second DataTable identical to the first.
    DataTable table2 = table1.Clone();
    // Add three rows. Note that the id column can't be the  
    // same as existing rows in the original table.
    row = table2.NewRow();
    row["id"] = 14;
    row["item"] = 774;
    table2.Rows.Add(row);
    row = table2.NewRow();
    row["id"] = 12;
    row["item"] = 555;
    table2.Rows.Add(row);
    row = table2.NewRow();
    row["id"] = 13;
    row["item"] = 665;
    table2.Rows.Add(row);
    // Merge table2 into the table1.
    Console.WriteLine("Merging");
    table1.Merge(table2);
    PrintValues(table1, "Merged With table1");
}
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