C# Datagridview 复选框选中事件-多行？

C# Datagridview Checkbox Checked Event - multiple rows?

提问by Goober

I have a datagridview with multiple columns and rows. The first column contains a checkbox. I want the user to be able to select multiple checkboxes and then perform an action. For example if they select checkboxes in rows 1 and 2, the data from other columns in rows 1 and 2 can be selected and passed into a messagebox.

我有一个多列和多行的数据网格视图。第一列包含一个复选框。我希望用户能够选择多个复选框，然后执行操作。例如，如果他们选择了第 1 行和第 2 行中的复选框，则可以选择第 1 行和第 2 行中其他列的数据并将其传递到消息框。

I know i need to use the checkbox_changed event to do this. However I am having trouble working out how to do this for multiple rows?

我知道我需要使用 checkbox_changed 事件来做到这一点。但是，我在弄清楚如何为多行执行此操作时遇到了麻烦？

采纳答案by Vivek

On button Click event do:

在按钮 Click 事件上执行：

static int SelectColumnIndex = 0;
PerformAction_Click(object sender, System.EventArgs e)
{
    string data = string.Empty;
    foreach(DataGridViewRow row in MyDataGridView.Rows)
    {
      if(row.Cells[SelectColumnIndex].Value!=null &&
             Convert.ToBoolean(row.Cells[SelectColumnIndex].Value) == true)
      {
        foreach(DataGridViewCell cell in row.Cells)
        {
          if(cell.OwningColumn.Index!= SelectColumnIndex)
          {
            data+= (cell.Value + " ") ; // do some thing
          }
        }
        data+="\n";
      }
   }
   MessageBox.Show(data, "Data");
}

回答by Meta-Knight

If you want the user to click on a button to perform the action, then what you need to handle is the Click event of the button, not the CheckBox Changed event... When the button is clicked, just go through all rows of your DataGridView and perform an action on rows with a checked checkbox.

如果你想让用户点击一个按钮来执行动作，那么你需要处理的是按钮的 Click 事件，而不是 CheckBox Changed 事件......当按钮被点击时，只需遍历你的所有行DataGridView 并使用选中的复选框对行执行操作。

回答by Rajendra Kokare

static int SelectColumnIndex = 0;

PerformAction_Click(object sender, System.EventArgs e)
{
    string data = string.Empty;    

    foreach(DataGridViewRow row in MyDataGridView.Rows)     
    {
        if(row.Cells[SelectColumnIndex].Value != null 
            &&
         Convert.ToBoolean(row.Cells[SelectColumnIndex].Value) == true)       
        {
            foreach(DataGridViewCell cell in row.Cells)        
            {
                if (cell.OwningColumn.Index != SelectColumnIndex)                               
                {
                    data+= (cell.Value + " ") ; // do some thing           
                 }
            }

            data+="\n";
        }
    }

    MessageBox.Show(data, "Data");
}

回答by Hamed Mirzaei

I think you dont need to any event i solved this problem by this code:

我认为你不需要任何事件我通过这段代码解决了这个问题：

//In Fill DataGridViewEvent :
        DataGridViewCheckBoxColumn ChCol = new DataGridViewCheckBoxColumn();
        ChCol.Name = "CheckedRow";
        ChCol.HeaderText = "??????";
        ChCol.Width = 50;
        ChCol.TrueValue = "1";
        ChCol.FalseValue = "0";
        dg.Columns.Insert(0, ChCol);

// In Button Event put these codes:

            try
            {
                MessageBox.Show(row.Cells[2].Value.ToString() + " --> " +
                row.Cells["CheckedRow"].Value.ToString());
            }
            catch
            {
                // Nothing Act
            }


enter code here

Your Output by this parameter : ItemID --> 0 // For Unchecked Values ItemID --> 1 // For Checked Values

此参数的输出： ItemID --> 0 // 对于未选中的值 ItemID --> 1 // 对于选中的值

Now You Can filter the rows that return 1 as value for your action i tested this code and it work for me

现在您可以过滤返回 1 作为操作值的行我测试了这段代码，它对我有用