C# 和 SQL Server 中的复选框未显示数据

Question

我正在尝试显示数据库中的值。文本框值显示成功但复选框值未显示，并显示错误。我收到此屏幕截图中显示的错误：错误信息我的代码：sql = "select * from repair where repairid = '" + repairid + "'";SqlCommand cmd = new SqlCommand(sql, con);SqlDataReader dread;con.Open();dread = cmd.ExecuteReader();while (dread.Read()){    checkBox7.CheckState = dread[6].ToString();}

Answer 1

if(dread[6].ToString = = "True")

{

    CheckBox7.Checked = "true";

}

else

{ 

    CheckBox7.Checked = "false";

}