Knowledge Point: Pass XML as Parameter from C# to SQL Stored Procedure in VB.NET

Here I will explain how to pass or send xml fileas a parameter to SQL stored procedure in asp.net using C# and VB.NET.

Description:

In previous articles I explained read xml node values and bind data to gridview, how to insert and read data from xml in asp.net, Create online poll system with percentage graphs, Bind xml data to dropdownlist/gridview in asp.net . Now I will explain how to pass or send xml fileas a parameter to SQL stored procedure in asp.net using C# and VB.NET.

In situation I got requirement like read data from xml file and send that xml file as parameter to store procedure. My XML File Name as “Sample.xml” and that would contains data like this

xml version="1.0" encoding="utf-8" ?>

<users>

<user>

<FirstName>Suresh</FirstName>

<LastName>Dasari</LastName>

<UserName>SureshDasari</UserName>

<Job>Team Leader</Job>

</user>

<user>

<FirstName>Mahesh</FirstName>

<LastName>Dasari</LastName>

<UserName>MaheshDasari</UserName>

<Job>Software Developer</Job>

</user>

<user>

<FirstName>Madhav</FirstName>

<LastName>Yemineni</LastName>

<UserName>MadhavYemineni</UserName>

<Job>Business Analyst</Job>

</user>

</users>

Now I need to send this xml file as parameter to stored procedure for that first create xml file in your application (Right Click your application and select Add New Item >> Select XML file) and give name as “Sample.xml” and write following code in your aspx page like this

<head>

<title>Send xml file as a parameter to SQL stored procedure in asp.net</title>

</head>

<body>

<div>

<asp:Button ID="btnSend" Text="Send XML to Database" runat="server" onclick="btnSend_Click" /><br /><br />

<b>Inserted Records Details</b> :

<asp:GridView ID="gvDetails" runat="server">

</asp:GridView>

</div>

</form>

</body>

</html>

After that add following namespaces in codebehind

C# Code

using System;

using System.Data;

using System.Data.SqlClient;

using System.Xml;

Now add following code in code behind

protected void btnSend_Click(object sender, EventArgs e)

{

XmlTextReader xmlreader = new XmlTextReader(Server.MapPath("Sample.xml"));

DataSet ds = new DataSet();

ds.ReadXml(xmlreader);

xmlreader.Close();

if (ds.Tables.Count != 0)

{

using (SqlConnection con = new SqlConnection("Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB"))

{

con.Open();

SqlCommand cmd = new SqlCommand("prc_readxmldata", con);

cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.Add("@XMLdata", SqlDbType.Xml).Value = ds.GetXml();

SqlDataAdapter da=new SqlDataAdapter(cmd);

DataSet ds1=new DataSet();

da.Fill(ds1);

gvDetails.DataSource = ds1;

gvDetails.DataBind();

con.Close();

}

VB.NET Code

Imports System.Data

Imports System.Data.SqlClient

Imports System.Xml

Partial Class Default2

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

End Sub

Protected Sub btnSend_Click(ByVal sender As Object, ByVal e As EventArgs)

Dim xmlreader As New XmlTextReader(Server.MapPath("Sample.xml"))

Dim ds As New DataSet()

ds.ReadXml(xmlreader)

xmlreader.Close()

If ds.Tables.Count <> 0 Then

Using con As New SqlConnection("Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB")

con.Open()

Dim cmd As New SqlCommand("prc_readxmldata", con)

cmd.CommandType = CommandType.StoredProcedure

cmd.Parameters.Add("@XMLdata", SqlDbType.Xml).Value = ds.GetXml()

Dim da As New SqlDataAdapter(cmd)

Dim ds1 As New DataSet()

da.Fill(ds1)

gvDetails.DataSource = ds1

gvDetails.DataBind()

con.Close()

End Using

End If

End Sub

End Class

In above code I mentioned stored procedure “prc_readxmldata” now we need to create that stored procedure in database like as shown below

CREATE PROCEDURE prc_readxmldata

(

@XMLdata XML

)

BEGIN

SELECT

t.value('(FirstName/text())[1]','nvarchar(120)')AS FirstName ,

t.value('(LastName/text())[1]','nvarchar(120)')AS LastName,

t.value('(UserName/text())[1]','nvarchar(120)')AS UserName,

t.value('(Job/text())[1]','nvarchar(120)')AS Job

FROM

@XMLdata.nodes('/users/user')AS TempTable(t)

END

Here @XMLdata.nodes('/users/user') this will select sub nodes inside of nodes.

Once procedure created in your database run your application and check your output

Demo

Knowledge Point

Sunday, 19 January 2014

Pass XML as Parameter from C# to SQL Stored Procedure in VB.NET

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