Dictionary update value
dictionary-update-value.aspx
<%@ Page Language="C#" AutoEventWireup="true"%>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
//initialize a dictionary with keys and values.
Dictionary<int, string> birds = new Dictionary<int, string>() {
{1,"Eurasian Bittern"},
{2,"Little Bittern"},
{3,"Green Heron"},
{4,"Squacco Heron"},
{5,"Cattle Egret"}
};
Label1.Text = "dictionary keys and values..........";
foreach (KeyValuePair<int, string> pair in birds)
{
Label1.Text += "<br />" + pair.Key + " ........ " + pair.Value;
}
//update dictionary element value which key is 2
birds[2] = "Goliath Heron";
//update dictionary element value which key is 5
birds[5] = "Great White Pelican";
Label1.Text += "<br /><br />dictionary elements after updating..........";
foreach (KeyValuePair<int, string> pair in birds)
{
Label1.Text += "<br />" + pair.Key + " ........ " + pair.Value;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>c# example - dictionary update value</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:MidnightBlue; font-style:italic;">
c# example - dictionary update value
</h2>
<hr width="550" align="left" color="Gainsboro" />
<asp:Label
ID="Label1"
runat="server"
Font-Size="Large"
>
</asp:Label>
<br /><br />
<asp:Button
ID="Button1"
runat="server"
Text="dictionary update value"
OnClick="Button1_Click"
Height="40"
Font-Bold="true"
/>
</div>
</form>
</body>
</html>
- How to remove an item from Dictionary
- How to convert Dictionary keys into array
- How to convert Dictionary values into array
- How to count Dictionary items
- How to use KeyValuePair in a Dictionary
- Best way to iterate over a Dictionary
- How to sort a Dictionary by key and value
- How to add an item to a Dictionary if it does not exists
- How to update a key in a Dictionary
- How to access Dictionary items
