删除网格视图行数据错误Windows窗体我的代码附加

本文关键字:我的 窗体 代码 Windows 错误 网格 视图 数据 删除 | 更新日期: 2023-09-27 18:28:32

我正在尝试删除网格视图数据,因为我正在填充类似网格的

  public void FillCompanyInfo()
    {
        DataTable dtCompanyInfo = new DataTable();
        dtCompanyInfo = objFunctions.GetCompanyInfo();
        if(dtCompanyInfo.Rows.Count>0)
        {
            dgvCompany.DataSource = dtCompanyInfo;
        }
        if (dtCompanyInfo.Rows.Count > 0)
        {
            if (this.dgvCompany.Columns.Count == 8)
            {
                DataGridViewCheckBoxColumn checkColumn = new DataGridViewCheckBoxColumn();
                checkColumn.Name = "";
                checkColumn.HeaderText = "Select";
                checkColumn.Width = 50;
                checkColumn.ReadOnly = false;
                checkColumn.FillWeight = 10; //if the datagridview is resized (on form resize) the checkbox won't take up too much; value is relative to the other columns' fill values''
                dgvCompany.Columns.Add(checkColumn);
            }
        }
    }

填充网格后,我点击网格行并点击删除按钮,如

  private void btn_Delete_Click(object sender, EventArgs e)
        {
            foreach (DataGridViewRow r in dgvCompany.Rows)
            {
                if (Convert.ToBoolean(r.Cells[8].Value))  //cells[4] CONTAINS CHECKBOX COLUMN
                {
                    string strId = r.Cells[1].Value.ToString();  //cells[0] CONTAINS EMPIDCOLUMN
                    objFunctions.DeleteCompany(strId);
                }
            }
            FillCompanyInfo();
        }

但它错误地删除了我的网格视图中的数据,我得到了从0到6的数字和字符串字段,并在第7位添加了chk框,而在将数据绑定到网格后,我还在第8位添加了一列,这可能是由于某种原因吗?

在调试时,我突然注意到在这个地方,

foreach (DataGridViewRow r in dgvCompany.Rows)

该网格视图以这种方式将列chk框放在零位,然后是七个过滤器,然后是chk框在8位,它是如何改变顺序的?

希望您的建议提前感谢

删除网格视图行数据错误Windows窗体我的代码附加

在绑定之前需要清除网格视图数据源。请参阅此链接以清除网格视图。试试这个代码

Datagridview删除所有列

公共void FillCompanyInfo(){

        dataGridView1.DataSource = null;
        dataGridView1.Columns.Clear();
        dtCompanyInfo = GetCompanyInfo();
        if (dtCompanyInfo.Rows.Count > 0)
        {
            dataGridView1.DataSource = dtCompanyInfo;
            DataGridViewCheckBoxColumn checkColumn = new DataGridViewCheckBoxColumn();
            checkColumn.Name = "";
            checkColumn.HeaderText = "Select";
            checkColumn.Width = 50;
            checkColumn.ReadOnly = false;
            checkColumn.FillWeight = 10; //if the datagridview is resized (on form resize) the checkbox won't take up too much; value is relative to the other columns' fill values''
            dataGridView1.Columns.Add(checkColumn);
        }
    }