无法删除DatagridView中的选中行 [英] Can not Delete Checked Rows in DatagridView

问题描述

你好.....
我有一个Datagridview.并且存在两列，一列是DataGridViewTextBoxColumn(第零列)
另一个是DataGridViewCheckBoxColumn(第一列)
我已经填满了Datagridview.我想删除那些已选中的行.
我的代码是...

Hello.....
I have a Datagridview . and there two columns exist ,one is DataGridViewTextBoxColumn(zeroth column)
and another is DataGridViewCheckBoxColumn(first column)
I have already filled my Datagridview. i want to delete those rows which are Checked.
my code is ...

for (int i = 1; i <= dataGridView1.Rows.Count; i++)
      {
        if  (Convert.ToBoolean(dataGridView1.Rows[i].Cells[1].Value)==true)
           {
              dataGridView1.Rows.RemoveAt ( i);
           }   
      }

但是我选择的行无法删除，发生了异常，
它表明

but my selected rows could not delete , exception is occurred ,
it shows that

dataGridView1.Rows[1].Cells[1].Value =null  //if I check 1st Row

为什么显示null却已被选中?

任何其他代码来删除选中的行吗?

why is shows null though it is already checked ?

any other code to delete checked rows ?

推荐答案

尝试以下操作:

Try this:

protected void btnMultipleRowDelete_Click(object sender, EventArgs e)
{
    // Looping through all the rows in the GridView
    foreach (GridViewRow row in GridView1.Rows)
    {
        CheckBox checkbox = (CheckBox)row.FindControl("cbRows");

        //Check if the checkbox is checked.
        //value in the HtmlInputCheckBox's Value property is set as the

        //value of the delete command's parameter.
        if (checkbox.Checked)
        {
            // Retreive the Employee ID
            int employeeID = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Value);

            // Pass the value of the selected Employye ID to the Delete //command.
            SqlDataSource1.DeleteParameters["EmployeeID"].DefaultValue = employeeID.ToString();
            SqlDataSource1.Delete();
        }
    }
}

获取有关以下线程的完整答案:
从datgridview和数据库访问中删除行 [ ^ ]

Get complete answer on following thread:
Delete rows from datgridview and database access[^]

希望对您有所帮助:

Hope it helps:

List<int> indexes =  new List<int>();

foreach (DataGridViewRow row in dataGridView1.Rows)
{
   if (row.Cells[1].Value != null)
      if ((bool)row.Cells[1].Value)
         indexes.Add(row.Index);
}

foreach (int index in indexes)
    dataGridView1.RemoveAt(index);</int></int>

for (int i = 1; i <= dataGridView1.Rows.Count; i++)

您从1开始循环.这就是为什么会出错.
从第0个索引开始循环

you are starting loop from 1. That is why you are getting error.
start for loop from 0th index

for (int i = 0; i < dataGridView1.Rows.Count; i++)

这篇关于无法删除DatagridView中的选中行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！