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Monica Priyadharshini

Monica Priyadharshini

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error in Web Service

Oct 26 2017 7:28 AM
Hi,
I have a gridview which display the list of student details from the database. I have used webservice in this. what is the problem here is, when i add this web service to the application the data of student is not fetched from the database , but it worked wel when i tried before adding the webservice. I dono what is the problem, Please help me to find out. 
 
DAL:
public class StudentDALClass
{
string constring = System.Configuration.ConfigurationManager.ConnectionStrings["conStr"].ConnectionString;
/// <summary>
/// Binding the Gridview
/// </summary>
/// <returns></returns>
public DataTable StudentGridBindDAL()
{
SqlConnection con = new SqlConnection(constring); ;
DataTable dt = new DataTable();
SqlDataAdapter dataAdapter;
SqlCommandBuilder commandBuilder;
try
{
con.Open();
dataAdapter = new SqlDataAdapter("spSelectStudentTable", con);
commandBuilder = new SqlCommandBuilder(dataAdapter);
dataAdapter.Fill(dt);
return dt;
}
catch (SqlException)
{
throw new Exception("Error Occurred in DB, Please try again later");
}
catch (NullReferenceException)
{
throw new Exception("Invalid data has been passed");
}
catch (FormatException)
{
throw new Exception("Iput string was not in a correct formate");
}
catch (IndexOutOfRangeException)
{
throw new Exception("Invaid input has been passed");
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (con.State == ConnectionState.Open)
{
con.Close();
}
}
}
} 
BLL:
public class StudentBLLClass
{
StudentDALClass dal = new StudentDALClass();
/// <summary>
/// binding the student data to the grid view
/// </summary>
/// <returns></returns>
public DataTable StudnetBindBLL()
{
DataTable dt;
try
{
dt = dal.StudentGridBindDAL();
return dt;
}
catch (Exception ex)
{
throw ex;
}
}
} 
 WEB Service :
[ServiceContract]
public interface IService1
{
[OperationContract]
DataTable StudnetBindService();
[OperationContract]
void AddStudentService(StudentEntityClass se);
[OperationContract]
void UpdateStudentService(StudentEntityClass se);
[OperationContract]
void DaleteStudentService(StudentEntityClass se);
}
 
//implementing interface 
public class Service1 : IService1
{
StudentBLLClass bll = new StudentBLLClass();
public DataTable StudnetBindService()
{
DataTable dt;
dt = bll.StudnetBindBLL();
return dt;
}
public void AddStudentService(StudentEntityClass se)
{
bll.AddStudentBLL(se);
}
public void UpdateStudentService(StudentEntityClass se)
{
bll.UpdateStudentBLL(se);
}
public void DaleteStudentService(StudentEntityClass se)
{
bll.DaleteStudentBLL(se);
}
}
 Code Behind:
StudentBLLClass bll = new StudentBLLClass();
StudentListServiceReference.Service1Client servicereference = new StudentListServiceReference.Service1Client();
/// <summary>
/// Displaying gridview in pageload
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
try
{
GridBind();
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
}
EntityLayer:
public class StudentEntityClass
{
public int StudentId { get; set; }
public string StudentName { get; set; }
public string EmailId { get; set; }
public string PhoneNumber { get; set; }
public string City { get; set; }
} 
 
UI Layer:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<h1>List Of Students</h1>
<div>
<asp:GridView ID="grdStudentList" runat="server" AutoGenerateColumns="False" Width="500px" Height="200px"
DataKeyNames="StudentID" ShowFooter="true" CellPadding="4" ForeColor="#333333" GridLines="None"
HorizontalAlign="Center" OnRowCancelingEdit="grdStudentList_RowCancelingEdit" OnRowEditing="grdStudentList_RowEditing"
OnRowUpdating="grdStudentList_RowUpdating" OnRowDeleting="grdStudentList_RowDeleting">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:TemplateField HeaderText="Student ID">
<ItemTemplate>
<asp:Label ID="lblStudentId" runat="server" Text='<%#Bind("StudentID") %>'>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtStudentID" runat="server" Width="180px"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Student Name">
<ItemTemplate>
<asp:Label ID="lblStudentName" runat="server" Text='<%#Bind("StudentName") %>'>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEditStudentName" runat="server" Text='<%#Bind("StudentName") %>'>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtStudentName" runat="server" Width="180px"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Email Id">
<ItemTemplate>
<asp:Label ID="lblEmailID" runat="server" Text='<%#Bind("EmailID") %>'>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEditEmailID" runat="server" Text='<%#Bind("EmailID") %>'>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtEmailID" runat="server" Width="180px"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Mobile Number">
<ItemTemplate>
<asp:Label ID="lblPhoneNumber" runat="server" Text='<%#Bind("PhoneNumber") %>'>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEditPhoneNo" runat="server" Text='<%#Bind("PhoneNumber") %>'>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtPhoneNo" runat="server" Width="180px"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="City">
<ItemTemplate>
<asp:Label ID="lblCity" runat="server" Text='<%#Bind("City") %>'>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEditCity" runat="server" Text='<%#Bind("City") %>'>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtCity" runat="server" Width="180px"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="btnEdit" runat="server" Text="Edit" Font-Bold="true" CommandName="Edit" Width="150px"/>
</ItemTemplate>
<EditItemTemplate>
<asp:Button ID="btnUpdate" runat="server" Text="Update" Font-Bold="true" CommandName="Update" />
<asp:Button ID="btnCancel" runat="server" Text="Cancel" Font-Bold="true" CommandName="Cancel" />
</EditItemTemplate>
<FooterTemplate>
<asp:Button ID="btnAdd" runat="server" Text="Add" Width="150px" Font-Bold="true" CommandName="Add" OnClick="AddButtonClick" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="btnDelete" runat="server" Text="Delete" Font-Bold="true" CommandName="Delete" Width="150px" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
<RowStyle HorizontalAlign="Center"/>
</asp:GridView>
</div>
</form>
</body>
</html>
WEB CONFIG FILE:
<configuration>
<connectionStrings>
<add name="conStr" connectionString="Database=AdventureWorks2008;Server=CHV8LTDBNC01\LENTRACSDB2008;Integrated Security=False;UID=sqltrainer;PWD=Welcome123" providerName="System.Data.SqlClient"/>
</connectionStrings>
<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
</appSettings>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5"/>
</system.web>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the values below to false before deployment -->
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<protocolMapping>
<add binding="basicHttpsBinding" scheme="https" />
</protocolMapping>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<!--
To browse web app root directory during debugging, set the value below to true.
Set to false before deployment to avoid disclosing web app folder information.
-->
<directoryBrowse enabled="true"/>
</system.webServer>
</configuration>
 
 

Answers (3)