Return Post Variables from c# api as JSON array

Call to c# api using ajax and recieve an array of variables in JSON format.

javascript call to api: In aspx page, you can access a posted in variable such as an id…

const NewsID = ‘<%=Request.Form[“NewsID”]%>’;

… then call to api and get record from that id…

 $.ajax({
type: 'POST',
url: 'update.aspx/loadRecord',
data: JSON.stringify({ NewsID: NewsID }),
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (msg) {
var obj =  jQuery.parseJSON(msg.d)
console.log("I have successfully called to the api.");

 // set the heading value
 $("#Heading").val(obj.Heading);
 // set the body value
 $("#Body").val(obj.Body);
}
});


The C# api receives the record id and returns a record…

... call to database and get record ...

var message = new {Heading=Heading, Body= Body};
return JsonConvert.SerializeObject(message);

Append options to a select element using javascript

//dynamically add 20 years from this year to drop-down

      var select = document.getElementById(“ccexp”);

      var startYear = new Date().getFullYear();

      var option, currentYear, currentYearString, currentYearTwoDigit;

      for (var i = 0; i <= 20; i++) {

          currentYear = startYear + i;

          currentYearString = currentYear.toString();

          currentYearTwoDigit = currentYearString.substring(2);

          option = document.createElement(“option”);

          option.setAttribute(“value”, currentYearTwoDigit);

          option.appendChild(document.createTextNode(currentYear));

          select.appendChild(option);

      }

Javascript to append options to a select element

select multiple elements by class, and loop through them with javascript

I have a table with elements in it. I need to target them and change the css class.

<div class="dwtooltip"><img src="note_icon.png" /><span class="dwtooltiptext">my tooltip text here.</span></div>

const items = document.querySelectorAll(‘.dwtooltip’);
if(items){

}
for (var i=0; i < items.length; i++) {
console.log(i);
items.forEach(function(el){
el.classList.add(“notooltip”);
el.classList.remove(“dwtooltip”);
});
}


Get the value from between parenthesis c#

Many times you have data in a format that needs to be parsed. One thing I have come across lately is needing to get a value from between parenthesis.

Data: Here is my description and it has a code.(1234)

I need to get the code of 1234 from the data.

string value = "Here is my description and it has a code.(1234)";
int startIndex = value.IndexOf('(');
int endIndex = value.IndexOf(')');
int length = endIndex - startIndex;
if (startIndex > -1 && endIndex > -1)
{
return value.Substring(startIndex + 1, length-1);
}
else   return "There are no parenthesis in the value.";

Local email delivery : Dump email from an app into a local directory for testing

While devving an app on localhost, the email  scripts error out and you cant test what the message would have looked like. With this handy snippet, you can dump any email from your app into a local directory. Slap this into your dev web config file.

<mailSettings>

    <smtp deliveryMethod="SpecifiedPickupDirectory">

      <specifiedPickupDirectory pickupDirectoryLocation="C:\MailDump\" />

      <network host="localhost"/>

    </smtp>

  </mailSettings>

 

Add an ID to the rows of a GridView table

It can be handy to have each row have an ID for use with client side scripting. By default the asp gridview does not come with ids for the rows. Use the row databound event to add them

protected void GridViewFullView_RowDataBound(object sender, GridViewRowEventArgs e)
{
     if (e.Row.RowType == DataControlRowType.DataRow)
     {
         GridViewRow row = e.Row;
          row.Attributes["id"] = GridViewFullView.DataKeys[e.Row.RowIndex].Value.ToString();
     }
}

Add “Please select” message to databound dropdown list c#

So you have dropdown lists, populated with data from your data storage solution.  You need to prepend the lists with messages such as “Please select an option”.

 

 public void addMessageToDropdown(DropDownList whatDropdown, string ddmessage)
 {
    DropDownList list = whatDropdown as DropDownList;
    if(list != null)
    {
      list.Items.Insert(0, ddmessage);
    }
 
 }

 

Add years to dropdown

Need a dropdown list with some years in it and a custom message as the first choice? How about this to start with: current year through 6 years into the future. Add a dropdownlist control to the page and call this function on pageload.

public void addYearsToDropdown(DropDownList whatDropdown, string ddmessage)
 {
      DropDownList list = whatDropdown as DropDownList;
      if(list != null)
      {
          list.Items.Insert(0, ddmessage);
      }
      int curYear = System.DateTime.Now.Year - 1;
      for(int i = 1; i < 6; i++)
      {
          list.Items.Insert(i, (curYear + i).ToString());
       }
 }

addMessageToDropdown(DropDownListYears, “–Select A Year–“);