Question

I’m trying to store a datetime into a SQL database. I use datetime2(0) variable for that purpose.

But i always get this exception :

Conversion failed when converting date and/or time from character
string

Here’s my code that generates the error :

protected void InsertDB(string title, string desc, string cat, string path)
{
    string now = DateTime.Now.ToString("dd-MM-yyyy h:mm:ss tt");
    title = title.Length == 0 ? "Untitled" : title;
    cat = cat.Length == 0 ? "Uncategorized" : cat;
    string cs = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
    using (SqlConnection con = new SqlConnection(cs))
    {
        try
        {                    
            SqlCommand cmd = new SqlCommand(@"INSERT INTO gallery (img_title, img_desc, img_cat, img_date, img_path)
                                            VALUES (@title, @desc, @cat, @date, @path)", con);
            con.Open();
            cmd.Parameters.AddWithValue("@title", title.Trim());
            cmd.Parameters.AddWithValue("@desc", desc.Trim());
            cmd.Parameters.AddWithValue("@cat", cat.Trim());
            cmd.Parameters.AddWithValue("@date", now.Trim());
            cmd.Parameters.AddWithValue("@path", path.Trim());
            int result = cmd.ExecuteNonQuery();
            if (result == 1)
            {
                msg_lbl.Visible = true;
                msg_lbl.Text = "New Image is uploaded.";
                title_txt.Text = "";
                desc_txt.Text = "";
                cat_txt.Text = "";                        
            }
            else
            {
                msg_lbl.Visible = true;
                msg_lbl.Text = "Error occured.";
            }
        }
        catch (SqlException ex)
        {
            msg_lbl.Visible = true;
            msg_lbl.Text = ex.Message; //I get this exception here
        }
        catch (Exception ex)
        {
            msg_lbl.Visible = true;
            msg_lbl.Text = ex.Message;
        }

    }

Answer 1

The error must be when passing the variable “now” in the sql query. If the column Img_date is a datetime field then you must pass the value as a a datetime not as a string. Try assigning the value Datetime.Now to the parameter @date :

cmd.Parameters.AddWithValue("@date", DateTime.Now);