Question

我有3个文本框来添加技能，这些文本框分为一个名为“SkillName”的列。但是，我收到了这个错误。

'System.Web.UI.Control' does not contain a definition for 'Text' and no extension method 'Text' accepting a first argument of type 'System.Web.UI.Control' could be found (are you missing a using directive or an assembly reference?)

但我使用System.Web.UI.WebControls;

使用了程序集

这是我添加文本框的代码 -

 public void InsertSkillInfo()
        {


            String str = @"Data Source=USER-PC\SQLEXPRESS;Initial Catalog=DBNAME;Integrated Security=True";
            SqlConnection conn = new SqlConnection(str);

            try
            {

                for (int i = 1; i <= 3; i++)
                {
                    conn.Open();
                    **string skill = (Page.FindControl("TextBox" + i.ToString())).Text;**
                    const string sqlStatement = "INSERT INTO Cert (SkillName) VALUES (@SkillName)";
                    SqlCommand cmd = new SqlCommand(sqlStatement, conn);
                    cmd.CommandType = CommandType.Text;
                    cmd.Parameters["@SkillName"].Value = skill;
                    cmd.ExecuteNonQuery();
                }
            }

            catch (System.Data.SqlClient.SqlException ex)
            {
                string msg = "Insert Error:";
                msg += ex.Message;
                throw new Exception(msg);
            }

            finally
            {
                conn.Close();
            }

         }

Answer 1

Page.FindControl会返回Control，但您需要一个文本框。如果您确定它找到的控件将始终是文本框，则将其强制转换为文本框。

或者：

string skill = (TextBox)((Page.FindControl("TextBox" + i.ToString()))).Text;

或

var skill = "";
var control = Page.FindControl("TextBox" + i.ToString()) as TextBox;
if(control != null {
    skill = control.Text;
}

Answer 2

您需要将控件转换为文本框，因此它应该是

string skill = ((TextBox) Page.FindControl("TextBox" + i.ToString())).Text;

Answer 3

您可以像这样尝试

string skill = ((TextBox)(Page.FindControl("TextBox" + i.ToString()))).Text;

将多个文本框值插入sql数据库

3 个答案: