[Solved] Fill DataTable Error: Conversion failed when converting the varchar value to data type int

Hello,

There seem to be a problem with my GridView when I navigate to dashboard page where the grid view is.

For example, after I log in to the platform and navigate to a page where I have Grid-view that display records from data table an error is received on the browser.

Conversion failed when converting the varchar value 'ukosimons@gmail.com' to data type int

Here is my Grid-view code that displays records from data table. 

    if (!this.IsPostBack)
    {
        this.BindGrid();
    }
    private void BindGrid()
    {
        string sql = "SELECT * FROM Users WHERE CreatedBy=@CreatedBy OR @CreatedBy = ''";
        using (SqlCommand cmd = new SqlCommand(sql))
        {
            cmd.Parameters.AddWithValue("@CreatedBy", Session["user"]);
            cmd.Connection = con;
            using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
            {
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    AdminGrid.DataSource = dt;
                    AdminGrid.DataBind();
                }
            }
        }
    }