如何测试一行gridview是否为空asp.net答案

【问题标题】：How to test if a row of gridview is empty asp.net如何测试一行gridview是否为空asp.net
【发布时间】：2018-04-04 15:38:30
【问题描述】：

我在页面加载时有一个空的网格视图。在 RowDataBound 事件中，我将下拉列表添加到最后一个单元格问题是 ddl 在页面加载时显示。如果行的单元格为空，我想隐藏它

protected void grw_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            DropDownList ddl = e.Row.FindControl("ddlAccepted") as DropDownList;
            if (null != ddl)
            {
                string acceptedKey = (e.Row.FindControl("lblAccepted") as Label).Text;
                string acceptedValue = "";
                if (acceptedKey == "True")
                {
                    acceptedValue = "Oui";
                }
                else if (acceptedKey == "False")
                {
                    acceptedValue = "Non";
                }

                ddl.Items.Add(new ListItem("Non", "False"));
                ddl.Items.Add(new ListItem("Oui", "True"));

                ddl.SelectedValue = acceptedValue;
            }


        }

    }

谢谢。

【问题讨论】：

你是如何填充gridview的？
string requete = "select '' as id,'' as caseNumber, "'' as intervener,'' as requester,'' as SendDate, '' as recipient, "'' as ReceptionDate,'' as StateCode,'' as IsAccepted"; grw.DataSource = GetEmptyDataSet(requete); grw.DataBind();
GetEmptyDataSet 返回一个没有行或有空行的 DataSet？
public static DataTable GetEmptyDataSet(string query) { DataTable dataTable = null; SqlConnection connection = null; try { connection = Open(); SqlCommand command = new SqlCommand(query, connection); SqlDataAdapter adapter = new SqlDataAdapter(command); dataTable = new DataTable(); adapter.Fill(dataTable); } finally { Close(connection); } return dataTable; }

标签： asp.net gridview webforms dropdown rowdatabound

【解决方案1】：

我找到了解决方案空单元格的文本等于&nbsp; 所以我添加了这一行，它的工作原理

if (e.Row.Cells[0].Text != "&nbsp;")

【讨论】：

【解决方案2】：

试试这个代码：

if (e.Row.RowType == DataControlRowType.DataRow)
{
    // Check if the first two cells of row are not empty
    if (e.Row.Cells[0].Text != "" || e.Row.Cells[1].Text != "")
    {
        DropDownList ddl = e.Row.FindControl("ddlAccepted") as DropDownList;
        if (null != ddl)
        {
            string acceptedKey = (e.Row.FindControl("lblAccepted") as Label).Text;
            string acceptedValue = "";
            if (acceptedKey == "True")
            {
                acceptedValue = "Oui";
            }
            else if (acceptedKey == "False")
            {
                acceptedValue = "Non";
            }

            ddl.Items.Add(new ListItem("Non", "False"));
            ddl.Items.Add(new ListItem("Oui", "True"));

            ddl.SelectedValue = acceptedValue;
        }
    }
}

只需将此if 支票添加到代码中：

// Check if the first two cells of row are not empty
if (e.Row.Cells[0].Text != "" || e.Row.Cells[1].Text != "")
{
    //... do some other code here
}

【讨论】：