字符串"不包含“文本"的定义 [英] string' does not contain a definition for 'Text'

问题描述

当我执行您的代码时，文本属性未配置

照你说的撒谎

 受保护的 无效 Button1_Click(对象发​​件人，EventArgs e)
    {
         foreach (GridViewRow行 in  GridView1.Rows中的行)
        {
            CheckBox chk =((CheckBox)(row.FindControl(" ))));;

            
                如果(已选中)
                {
                    字符串 lblid = row.FindControl("  span>) as 标签；
                    字符串 lblid = lblid.

                    SqlCommand comm = 新 SqlCommand();
                    comm.CommandText = " ;
                    comm.Connection = conn;

                    comm.Parameters.AddWithValue(" ， int  .Parse(lblid.ToString()));
                 
// 实际上，我想要lblid.Text，但是thr是要转换的问题
                    conn.Open();

                    comm.ExecuteNonQuery();

                    conn.Close();
                }
            }

            LoadGridView();
        } 

我该怎么办

谢谢

解决方案

string lblid = row.FindControl("lblid") as Label;

标签不能转换为字符串. lblid将为空.

string lblid = lblid.

WTF！

int.Parse(lblid.ToString())

当然，由于lblid为null，因此将无法正常工作.如果该值不是数字，则它也将不起作用.最好使用TryParse

根据您的代码，您正在查找标签，并将其存储为字符串.

字符串没有text属性.

而是将其存储为标签，然后访问它的文本属性，将其存储在字符串中.

标签lblid = row.FindControl(" )作为标签；
                    字符串 strlblid = lblid.Text 

这应该有帮助.

*如果可以解决您的查询，请标记为答案.

再次为字符串分配标签...

用这种方式做

标签lblid =((Label)(row.FindControl("lblid")));

然后使用lblid.Text属性获取字符串值

Text property not configure when i execute your code

lie this as per you say

  protected void Button1_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridView1.Rows)
        {
            CheckBox chk = ((CheckBox)(row.FindControl("chkdelete")));

            
                if(chk.Checked)
                {
                    string lblid = row.FindControl("lblid") as Label;
                    string lblid = lblid.

                    SqlCommand comm =new SqlCommand();
                    comm.CommandText = "delete from tbluser where id=@id";
                    comm.Connection = conn;

                    comm.Parameters.AddWithValue("@id",int.Parse(lblid.ToString()));
                 
//ACTUALY I WANT lblid.Text but thr is problem to convert
                    conn.Open();

                    comm.ExecuteNonQuery();

                    conn.Close();
                }
            }

            LoadGridView();
        }

what should i do

thank you

解决方案

string lblid = row.FindControl("lblid") as Label;

A Label can''t be converted to a string. lblid will be null.

string lblid = lblid.

WTF!

int.Parse(lblid.ToString())

Of course since lblid is null this won''t work. It will also not work if the value is not a number. It would be better to use TryParse

Hi,

As per your code, you''re finding a label, and storing it as a string.

String does not have a text property.

Instead, store it as a label, and then access it''s text property store that in a string.

Label lblid = row.FindControl("lblid") as Label;
                    string strlblid = lblid.Text

This should help.

*Mark as answer if this solves your query.

again you are assigning a label to string...

do it this way

Label lblid = ((Label)(row.FindControl("lblid")));

and then use lblid.Text property to get string value

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