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Thursday, June 26, 2008

My .Net Videos in Youtube/Google videos

Wednesday, June 18, 2008

Query String Asp .Net : Working with multiple values

Query string is the part of URL that can be used to send data as parameters. Let's first analyze the query string generated by Google on making a search for 'Shalvin'

http://www.google.co.in/search?hl=en&q=Shalvin.Here two values are passed as query string.

Create a Web site with two web pages.
In the button click of Default.aspx write the following code:

protected void sumButton_Click(object sender, EventArgs e)

{
	Response.Redirect("Sum.aspx?Val1=" + txtVal1.Text + "&Val2=" + txtVal2.Text);
}

Here is the code for extracting the value in the second page.

protected void Page_Load(object sender, EventArgs e)
{
	Response.Write("Hello " + Request.QueryString["Name"] + " your blog is " + Request.QueryString["Blog"]);
}

Calculator

<body>
    <form id="form1" runat="server">
    <div>
    
        Value 1<asp:TextBox ID="txtVal1" runat="server"></asp:TextBox>
        <asp:CompareValidator ID="CompareValidator1" runat="server" 
            ControlToValidate="txtVal1" ErrorMessage="Value cannot be string" 
            Operator="DataTypeCheck" Type="Integer"></asp:CompareValidator>
        <br />
        <br />
        Value 2<asp:TextBox ID="txtVal2" runat="server"></asp:TextBox>
        <asp:CompareValidator ID="CompareValidator2" runat="server" 
            ControlToValidate="txtVal2" ErrorMessage="Value cannot be string " 
            Operator="DataTypeCheck" Type="Integer"></asp:CompareValidator>
        <br />
        <br />
        <asp:Button ID="sumButton" runat="server" onclick="Button1_Click" Text="Button" />
    
    </div>
    </form>
</body>

Default.aspx

protected void Button1_Click(object sender, EventArgs e)

{
	Response.Redirect("Sum.aspx?Val1=" + txtVal1.Text + "&Val2=" + txtVal2.Text);
}

Sum.aspx

int i, j, res;
protected void Page_Load(object sender, EventArgs e)
{
    i = Int32.Parse(Request.QueryString["Val1"]);
    j = Int32.Parse(Request.QueryString["Val2"]);
    res = i + j;
    Response.Write(res.ToString());
}

Related Blog

ASP.Net 2.0 Profile

Session Asp .Net : Storing DataSet

Friday, February 8, 2008

ASP.Net Profile

Profile is a ASP.Net 2.0 State Management option.

The greatest drawback with other state management options like Query String, Session Variable, Cookie and ViewState is lack of intellisense, which is the cause for hard to track bugs.
For example if you define a QueryString called Name in Default.aspx and refer to the same as Nam in Welcome.aspx, you won't get an error message instead a new QueryString variable called Nam will be created so obviously unpredicted result.

Profile supports intellisense.

Profile is strongly typed and you can specify default value.

Start out be creating Profile propertis in web.config

Make sure you run the application before using the profile properties.

You will get intellisense of Profile properties.

//Default.aspx
protected void btnSubmit_Click(object sender, EventArgs e)
{
Profile.Name = txtName.Text;
Profile.Blog = txtBlog.Text;
Profile.Rate = 400 + 100;
Response.Redirect("Welcome.aspx");
}

Here note that we are not assigning value to Specialization Profile property and we can apply arithmetic operations on Rate Profile property since its type is Int32.

We are accessing the value in Welcome.aspx

//Welcome.aspx
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(String.Format("{0} 's blog is {1} specializing in {2} hourly rate is {3} INR", Profile.Name, Profile.Blog, Profile.Specialization, Profile.Rate ));
}

Group of Personalization Properties

lt;profile>

<properties>
<group name ="Person">
<add name ="Name"/>
<add name ="Location"/>
</group>
</properties>
</profile>

//Default.aspx
protected void btnSubmit_Click(object sender, EventArgs e)
{
Profile.Person.Name = "Shalvin";
Profile.Person.Location = "Kochi";
Response.Redirect("Welcome.aspx");

}

//Welcome.aspx
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(String.Format("I am {0} my location is {1}", Profile.Person.Name, Profile.Person.Location));
}

Using Sql Server Instance Database

>aspnet_reqsql -E -S .\shalvin -d ShalvinProfile -A p

<connectionStrings>
<add name="ShalvinProfileConnectionString"
connectionString="Data Source=.\shalvin;Initial Catalog=ShalvinProfile;Integrated Security=True"
providerName="System.Data.SqlClient"/>
</connectionStrings>

<system.web>

<profile>
<providers>
<clear/>
<add name="AspNetSqlProfileProvider"
type="System.Web.Profile.SqlProfileProvider"
connectionStringName="ShalvinProfileConnectionString"/>
</providers>
<properties>
<add name="Name"/>
</properties>
</profile>
</system.web>

Related Blog

Query String Asp .Net : Working with multiple values

Session Asp .Net : Storing DataSet

Shalvin - Angular and Microsoft .Net Blogs

Pages

Thursday, June 26, 2008

My .Net Videos in Youtube/Google videos

Wednesday, June 18, 2008

Query String Asp .Net : Working with multiple values

ASP.Net 2.0 Profile

Friday, February 8, 2008

ASP.Net Profile

Query String Asp .Net : Working with multiple values

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