Question

我想通过在表单中按下按钮（btnPersonnelDelete）来删除表格中的一行 - 在dataGridView1中显示。 DeleteQuery需要PersonnelID（perID）作为输入才能运行。 perID由“dataGridView1_CellClick”函数检索。

如何将perID传递给“btnPersonnelDelete_Click”函数。或者，如果有另一种更有意义的方式，我会很乐意遵循它。

提前谢谢。

 private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            long perID;
            // Only if data cells are clicked and not the column names
            if (e.RowIndex >= 0)
            {
                // Gets the PersonnelID which is in column[3] of each row as a string
                string SperID = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
                // Check if the string is empty
                if (!(String.IsNullOrEmpty(SperID)))
                {
                    // Converts PersonnelID from string to long
                    perID = long.Parse(SperID);
                    MessageBox.Show(SperID);                    
                }                
            }            
        }

    private void btnPersonnelDelete_Click(object sender, EventArgs e)
    {
        //what should be here?
    }

Answer 1

要从DataGridView中删除行，您需要行索引或行本身。按行删除索引要容易得多，因此首先定义一个全局属性来存储索引，并执行DeleteQuery另一个全局属性来存储personnelID。这意味着：

int rowIndex=0;//stroe the row index
string perId=String.Empty//store the PersonnelID or 'long' whatever 
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
    {
        long perID;
        // Only if data cells are clicked and not the column names
        if (e.RowIndex >= 0)
        {
            // Gets the PersonnelID which is in column[3] of each row as a string
            perId = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
            rowIndex = e.RowIndex; // store the selected row index
            // Check if the string is empty
            if (!(String.IsNullOrEmpty(SperID)))
            {
                // Converts PersonnelID from string to long
                perID = long.Parse(perId);
                MessageBox.Show(perId);                    
            }                
        }            
    }

按钮点击事件

：

private void btnPersonnelDelete_Click(object sender, EventArgs e)
    {
        //Executing delete query by perId

        dataGridView1.Rows.RemoveAt(rowIndex);//delete from dataGridview
        dataGridView1.Refresh(); // Redraw dataGridView to delete the row from screen
    }

我希望这个解决方案可以解决你的问题：）

如何将DataGridView_CellClick函数中的单元格内容传递给C＃中的button_Click函数？

1 个答案: