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What is Hidden Field & how it is implemented? |
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Answer» Hidden field is a control given by ASP.NET which is UTILIZED to store limited quantities of information on the client. It stores one value for a variable and it is an ideal way when the value of that variable is changing regularly. Hidden field control isn't rendered to the browser and is invisible too. A hidden field goes with each request LIKE a standard control's worth. Let’s see an example of how to USE this hidden field. This would INCREASE the value by 1 on EVERY button click. The source of the hidden field control is: <asp:HiddenField ID="HiddenField1" runat="server" />In the code-behind page: Protected void Page_Load(object sender, EventArgs e) { if (HiddenField1.Value != NULL) { int val = Convert.ToInt32(HiddenField1.Value) + 1; HiddenField1.Value = val.ToString(); Label.Text = val.ToString(); } } protected void Button1_Click(object sender, EventArgs e) { //No Action Button Click } |
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