如何在datagridview中一次选择第1行并使用messagebox显示

2 回答

• 0

  我只是复制粘贴你的代码，它按照你想要的输出工作正常 . 请看下面的代码：

  private void Form1_Load(object sender, EventArgs e)
      {
          DataTable dt = new DataTable();
          dt.Columns.Add("id");
          dt.Columns.Add("name");
          dt.Columns.Add("quantity");
  
          DataRow dr;
  
          dr = dt.NewRow();
          dr["id"] = "1";
          dr["name"] = "mobile";
          dr["quantity"] = "100";
  
          dt.Rows.Add(dr);
  
          dr = dt.NewRow();
          dr["id"] = "2";
          dr["name"] = "laptop";
          dr["quantity"] = "50";
  
          dt.Rows.Add(dr);
  
          this.dataGridView1.DataSource = dt;
      }
  
      private void button1_Click(object sender, EventArgs e)
      {
          for (int i = 0; i < dataGridView1.Rows.Count; i++)
          {
              dataGridView1.ClearSelection();
              dataGridView1.Rows[i].Selected = true;
  
              if (dataGridView1.SelectedCells.Count > 0)
              {
                  int selectedrowindex = dataGridView1.SelectedCells[i].RowIndex;
  
                  DataGridViewRow selectedRow = dataGridView1.Rows[selectedrowindex];
  
                  string _name = Convert.ToString(selectedRow.Cells["name"].Value);
                  decimal _quantity = Convert.ToDecimal(selectedRow.Cells["quantity"].Value);
                  MessageBox.Show("name: " + "quantity: " + _quantity.ToString());
                  dataGridView1.Rows[i].Selected = false;
              }
          }
      }
  

  回复于 2024-05-05T20:48:30+08:00
• 1

  IF YOU WANT TO SHOW ONLY SELECTED ROWS OF GRID THEN TRY THIS

  foreach（Data.dridViewRow在this.dataGridViewX1.Rows中的行）

  {
              if (Rows.Selected)
              {
                  MessageBox.Show("NAME: " +Rows.Cells[0].Value +  "Quantity: " + Rows.Cells[1].Value);
  
              }
          }
  

  IF YOU WANT TO SHOW ALL ROWS DATA

  然后使用该代码

  foreach（this.dataGridViewX1.Rows中的DataGridViewRow行）

  {
              if (rows.IsNewRow) { }
              else {
                  MessageBox.Show(rows.Cells[0].Value.ToString() + "','" + rows.Cells[1].Value.ToString()) ;
                  }
          }
  

  回复于 2024-05-05T20:48:30+08:00