date format issue in datatable or another way

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DateTime

formatting

if (dtProcedureDocs != null)
                        {
                            DataTable dt = GetProcedureDocssDatatable();
                            string DocTitleID = lstofWF.Where(o => o.FName == "Document Title").Select(s => s.FID).FirstOrDefault().ToString();
                            string DocCatID = lstofWF.Where(o => o.FName == "Document Category").Select(s => s.FID).FirstOrDefault().ToString();

                            foreach (DataRow sRow in dtProcedureDocs.Rows)
                            {
                                DataRow dr = dt.NewRow();
                                dr["Name"] = sRow["Name"];
                                dr["Document Title"] = sRow[DocTitleID];
                                dr["Document Type"] = sRow[DocCatID];
                                dr["Owner"] = sRow["OwnerGuid"].ToString();
                                dr["Created By"] = sRow["CreatedByGuid"].ToString();
                                dr["Created Date"] = String.Format("{0:M/d/yyyy}", sRow["CreatedDate"].ToString());
                                dr["Modified By"] = sRow["ModifiedByGuid"].ToString();
                                dr["Current Version"] = sRow["OwnerGuid"].ToString();

                                objTemplatesHelper.InsertRowInDocumentTable(table, dr);
                            }

                        }

 private DataTable GetProcedureDocssDatatable()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("Name", typeof(string));
            dt.Columns.Add("Document Title", typeof(string));
            dt.Columns.Add("Document Type", typeof(string));
            dt.Columns.Add("Owner", typeof(string));
            dt.Columns.Add("Created By", typeof(string));
            dt.Columns.Add("Created Date", typeof(string));
            dt.Columns.Add("Modified By", typeof(string));
            dt.Columns.Add("Current Version", typeof(string));
            return dt;
        }

Q1 The main things i added here, dtProcedureDocs was fetched from DB & I am exporting the values in MSWORD,the output is not giving me like that ["dd/mm/yyyy"]

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Q2 If I change the datatype of created date to date time like below,,,then how can i format in the above code?

private DataTable GetProcedureDocssDatatable()
       {
           DataTable dt = new DataTable();
           dt.Columns.Add("Name", typeof(string));
           dt.Columns.Add("Document Title", typeof(string));
           dt.Columns.Add("Document Type", typeof(string));
           dt.Columns.Add("Owner", typeof(string));
           dt.Columns.Add("Created By", typeof(string));
           dt.Columns.Add("Created Date", typeof(datetime));
           dt.Columns.Add("Modified By", typeof(string));
           dt.Columns.Add("Current Version", typeof(string));
           return dt;
       }