Please help me for changing data table row value from dictionary

Question

I have a dictionary I want to read this as for that my data table row value. I'm reading dictionary and data table row value but i cant change row value that coming dictionary value 

exception is =Input string was not in a correct format.Couldn't store <Eskisehir> in IL Column.  Expected type is Int16.

I fill data table from database and IL column type smallint i dont want to change column type nvarchar or anything else . How i can solve this problem .

My Code Here;

public DataTable getData(string komut)

    {

      DataTable dt = new DataTable();

      cnn = connect.GetConnection();

      sorgu = komut;

      cmd = new SqlCommand(sorgu, cnn);

      adap = new SqlDataAdapter(cmd);

      adap.Fill(dt);

      for (int i = 0; i < dt.Rows.Count; i++)

      {

        if (dt.Columns["IL"].ColumnName == "IL")

        {

          string tmpSehir;

          iller.TryGetValue(dt.Rows[i]["IL"].ToString(), out tmpSehir);

          dt.Rows[i]["IL"] = tmpSehir;

        }

      }

      

        return dt;

    }