Issue facing while converting XML string to dataset (datatype issue)

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Need datatable only + large data is der

BLL

C#

dt = SQLHelper.ExecuteDataTable(SQLHelper.ConnectionStringLocalTransaction, CommandType.StoredProcedure, DBConstants.Dummmy_DummyParameters, parm);
        dt.TableName = "DataTable";

        StringBuilder objStringBuilder=new StringBuilder();
        XmlWriter objXmlWriter = XmlWriter.Create(objStringBuilder);
        dt.WriteXml(objXmlWriter);
        objStandardPivotGridData.DataString = Convert.ToString(objStringBuilder);
        foreach (DataColumn dc in dt.Columns)
        {
            var field1 = dc.ToString();
            string Datatype = dc.DataType.Name.ToString();
        }

----------Service Call--------------
---------Controller---------

C#

XmlReader objXmlReader = XmlReader.Create(GenerateStreamFromString(Convert.ToString(objPFMS_ToolClient.GetGridData(objReportsModel, Session_Fetch.Fetch_UserDetails).DataString).Replace("DocumentElement", "root")));

              DataSet ds = new DataSet();
              ds.ReadXml(objXmlReader);
              foreach (DataColumn dc in ds.Tables["DataTable"].Columns)
              {
                  var field1 = dc.ToString();
                  string Datatype = dc.DataType.Name.ToString();
              }

What I have tried:

I am trying do WCF service call and i need to pass datatable because of dynamic databinding, i m doing
so In WCF service BLL and i am coverting datatable to xml string.
my return datatype is string.

In controller I am doing conversion of XML to Dataset
In the above scenario, I need to maintain the original datatype....Need help.. :)

Posted 14-Apr-16 4:38am

Member-515487

Updated 14-Apr-16 21:34pm

v2

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Comments

Sinisa Hajnal 15-Apr-16 2:37am

And what is the issue? You describe what you're doing, but there is no mention of any error text or description of what happens when you convert.

Member-515487 15-Apr-16 3:33am

Definition was getting change datatype after xml conversion

1 solution

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Member-515487 · Accepted Answer · 2016-04-14T21:34:00

XSD is solution

C#

DataTable table = new DataTable();
           table.TableName = "Sushant";
           table.Columns.Add("Dosage", typeof(int));
           table.Columns.Add("Drug", typeof(string));
           table.Columns.Add("Patient", typeof(string));
           table.Columns.Add("Date", typeof(DateTime));

           // Here we add five DataRows.
           table.Rows.Add(25, "Indocin", "David", DateTime.Now);
           table.Rows.Add(50, "Enebrel", "Sam", DateTime.Now);
           table.Rows.Add(10, "Hydralazine", "Christoff", DateTime.Now);
           table.Rows.Add(21, "Combivent", "Janet", DateTime.Now);
           table.Rows.Add(100, "Dilantin", "Melanie", DateTime.Now);
           StringBuilder sb = new StringBuilder();
           StringBuilder sb1 = new StringBuilder();
           XmlWriter tw= XmlWriter.Create(sb);
           table.WriteXmlSchema(tw);
           tw = XmlWriter.Create(sb1);
           table.WriteXml(tw);
           for (int j = 0; j < table.Columns.Count; j++)
           {

               Console.WriteLine(table.Columns[j].ColumnName + "', type = "
                                 + table.Columns[j].DataType.ToString());
           }

           DataTable dt = new DataTable();
           string strsb = Convert.ToString(sb);
           string strsb1 = Convert.ToString(sb1);
           TextReader tr = new StringReader(strsb);
           XmlReader xr = XmlReader.Create(tr);
           dt.ReadXmlSchema(xr);
           tr = new StringReader(strsb1);
           xr = XmlReader.Create(tr);
           dt.ReadXml(xr);
           for (int j = 0; j < dt.Columns.Count; j++)
           {

               Console.WriteLine(dt.Columns[j].ColumnName + "', type = "
                                 + dt.Columns[j].DataType.ToString());
           }