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Showing errors of date as "string was not recognized as a valid datetime"

sana khan
sana khan asked
Last Modified: 2017-11-01
 public void databind2()
        SqlCommand Comm1 = new SqlCommand("select FORMAT(deadlineDate,'dd-MM-yyyy') from FormDetails where FormId=" + FormIDs.Client_BulkPostCard + " and Edition_Id='" + Session["Edition_ID"].ToString() + "'", con);
        SqlDataReader dr = Comm1.ExecuteReader();
        if (dr.Read())
            Label1.Text = dr[0].ToString();          

        DateTime dt1 = DateTime.Parse(Label1.Text);
        DateTime dt2 = DateTime.Parse(DateTime.Now.ToString());

        int days = (dt1 - dt2).Days;

        if (days > 0)
            lblNoOfDays.Text = days + " DAYS LEFT";
            lblNoOfDays.Text = "DEADLINE PASSED";

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The dt1 date is coming from database in the format as dd-mm-yyyy(31-12-17) but the current date which is stored in dt2 is coming from system as dd-mmm-yyyy(01-nov-17)
so it showing error . Please help me solving this issue using Asp.Net
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