All posts by Thiyagu

.Net

set get

November 20, 2012 Thiyagu Leave a comment

Let us see the SET , GET with simple explanation

GET
The body of the get accessor is similar to that of a method. It must return a value of the property type.

SET
The set accessor is similar to a method whose return type is void. It uses an implicit parameter called value, whose type is the type of the property

class PDetails
{
private string name; // the name field
public string Name // the Name property
{
get { return name; }
set{ name = value; }
}
}

From Outer Class
PDetails obj = new PDetails();
obj .Name = “Joe”; // the set accessor is invoked here

System.Console.Write(obj .Name); // the get accessor is invoked here

.Net

The data source does not support server-side data paging.

November 20, 2012 Thiyagu Leave a comment

Error : The data source does not support server-side data paging.

Description: Error message occure while binding the result set to the Gridview using LINQ Query as like below

gvDetails.DataSource = details

Reason : We cant use an IQueryable object to data bind to a GridView and still use Paging and Sorting.

we must return a List to the GridView using the ToList() method.
Solution: In that scenario we want to add .ToList() as like below

gvDetails.DataSource = details.ToList();

.Net

Passing the value from code behind to jquery ( using JSON )

September 21, 2012 Thiyagu Leave a comment

Passing the value from code behind to jquery ( using JSON )

.ASPX File

<asp:Button ID=”btnSubmit” runat=”server” Text=”Submit” OnClick=”btnSubmit_Click” OnClientClick=”return CheckEmpID();” />

Script File

return false;
}

Code-Behind

[System.Web.Services.WebMethod()]
public static string[] EmpDetails(string EmpId)
{
string[] ReturnString = new string[2];
string EmpName = txtEmpName.Text.ToString()
try
{
if (EmpId.Length > 0)
{
if (EmpName != null)
{
ReturnString[0]=”0″;
ReturnString[1] = “EmpInfoSummary.aspx?Empid=” + EmpId;
}
else
{
ReturnString[0] = “1”;
ReturnString[1] = “Plaese Check The EMPID “;
}
}
}
catch (Exception ex)
{

}
return ReturnString;
}

.Net

How to use javascript variables in C# and vise versa

September 11, 2012 Thiyagu Leave a comment

Passing values from server to client side (code-behind to .aspx) for some manipulation using javascript and passing values from script to code behind are one of the most recurring tasks while developing the application. This scenario can be achieved in many ways. In this post we are going to see some techniques to achieve this.

1. Passing values from C# Code Behind to JavaScript.

You can use <%=variable%> to get value from aspx.cs. Variable must be public in aspx.cs file. For example, you can use: var date=”<%=DateTime.Now%>”; to get the server time.

Code behind :

public string value;

protected void Page_Load(object sender, EventArgs e)
{
value = “From Code-Behind”;
}

ASPX Code : Now, we going to display this variable Variable Cadebehindvalue into html page using javascript:

<script type=”text/javascript”>
$(document).ready(function() {
var Cadebehindvalue = ‘<%=value %>’;
var imagePath = <%=strImagePath %>;
alert(Cadebehindvalue);
});
</script>
</head>
<body>
<form id=”form1″ runat=”server”></form>
</body>

2. Passing parameter from C# Code Behind to javascript.

Using RegisterStartupScript we can write a JavaScript function in code behind and call it from code-behind or from HTML. Look at the code below for reference.

Syntax: RegisterStartupScript(Control, Type, String, String, Boolean)

Explanation :

Control : The control that is registering the client script block.
Type : The type of the client script block. This parameter is usually specified by using the typeof operator (C#) or the GetType operator (Visual Basic) to retrieve the type of the control that is registering the script.
Boolean : true to enclose the script block with <script> and </script> tags; otherwise, false.

CodeBehind :

String EmployeeID =”Aadharsh”;

ScriptManager.RegisterStartupScript(this, this.GetType(), “TestKey”, “TableTest(‘” + this.EmployeeID + “‘);”, true);

Java Script in aspx :

function TableTest(EMPID)
{
var width = 600;
var height = 330;
var left = 500;
var top = 100;
window.open(‘welcome.aspx?EMPID=’ + EMPID,’_blank’,’toolbar=no,menubar=no,resizable=no,scrollbars=auto,status=no,location=no,
width=’ + width + ‘,height=’ + height + ‘,left=’ + left + ‘,top=’ + top);
}

3. Passing values from JavaScript to C# Code Behind.

ASPX: Using HiddenField

<script type=”text/javascript”>
$(document).ready(function() {
alert($(“#hdfValue”).val());
});
</script>

inside the body tag

<form id=”form1″ runat=”server”>
<div>
<asp:HiddenField ID=”hdfValue” runat=”server” />
</div>
</form>

Codebehind

protected void Page_Load(object sender, EventArgs e)
{
hdfValue.Value = “Chnaged Value in codebehind”;
}

.Net

Image is not displaying in master page

September 11, 2012 Thiyagu Leave a comment

Issue : Image is not displaying in master page

Solution :

If you use html control in master page as like below line

then we want to include runat attribute inside the image tag.

else change the html control to asp control, then it will work in the master page

Note :

If you use the ~/ syntax then the control has to be a server control;so we want to include runat in the tag.

.Net

Removing Html tags

September 10, 2012 Thiyagu Leave a comment

How to remove the html tags from the string.

Code-Behind :

public static string RemoveHTMLRegex(string strHTML)
{
string tmpHTML = Regex.Replace(strHTML, “<br />”, ” <br />”);
return Regex.Replace(strHTML, “<.*?>”, string.Empty);
}

namespace :

using System.Text.RegularExpressions;

.Net

Copy data from div to ClipboardData using Jquery

September 10, 2012 Thiyagu Leave a comment

How to copy div content form div to clipboard

Code Behind File :

Create string builder with some content and assign as like

divcontent.InnerHtml = sbQuestionAndAnswers.ToString();

Design File:

Script File :

if (window.clipboardData && clipboardData.setData) {
if ($(‘#ctl00_cphMain_divcontent’)) {
$(‘#ctl00_cphMain_divcontent’).show();
var editableDiv = $(‘#ctl00_cphMain_divcontent’)

[0];
var txtRange = document.body.createTextRange();
editableDiv.style.display = “”;
txtRange.moveToElementText(editableDiv);
txtRange.select();
txtRange.execCommand(“Copy”);
editableDiv.style.display = “none”;//Hide the div
}}

Note :

Copying the content of div which is bind dynamically form code-behind and it will not display in the page. From that we copy content to clipboard

.Net

Nullable Types

September 10, 2012 Thiyagu Leave a comment

Nullable Types

Nullable types are variables that can be assigned with the value ‘null’. Allmost all value types can be declared as a nullable type. To declare a
value type as a nullable type, you have to add a questionmark after the type name.

For example:

char? a = null;
bool? b = null;
int? c = null;
double? d = null;

Nullable type has two read-only properties: HasValue and Value.
HasValue is a bool property. If the current value is ‘null’,
HasValue will return false, otherwise it will return true. The HasValue property can be used to test if a variable contains a value.

For Example :

int? test = 10;
if (test .HasValue)
{
Console.WriteLine(test .Value);
}
else
{
Console.WriteLine(“no value”);
}

How to convert Nullable Type to NON-Nullable Type

int? intValue1 = null;
int intValue2 = intValue1 ?? 10;

.Net

Total minutes between two time value

September 10, 2012 Thiyagu Leave a comment

How to get the difference of two time and get MM:SS of time

Code Behind :

DateTime locCurrentDateTime = System.DateTime.Now;
TimeSpan difference = locCurrentDateTime.Subtract(Convert.ToDateTime(Session[“starttime”]));
double hrs = Math.Floor(difference.TotalMinutes);
double sec = difference.Seconds;
string time = new DateTime(difference.Ticks).ToString(“mm:ss”);

Note :

output for above code will be find total minutes between two time and formatted as MM:SS

.Net

Finding the lable value after clicking the linkbutton inside the gridview

September 10, 2012 Thiyagu Leave a comment

Finding the lable/any control value after clicking the linkbutton inside the gridview

Code Behind File :

protected void btnClick_Click(object sender, EventArgs e)
{

GridViewRow clickedRow = ((LinkButton)sender).NamingContainer as GridViewRow;
Label lblID = (Label)clickedRow.FindControl(“lblEmpID”);

Session

[“patientEMRID”] = lblID.Text;

}

Note :

First line we finding the clickable row and then finding the label value inside the gridview. lblEmpID is the id of the lable .

1. Passing values from C# Code Behind to JavaScript.

2. Passing parameter from C# Code Behind to javascript.

3. Passing values from JavaScript to C# Code Behind.

Learn Powershell, AKS , Devops, jquery