136 lines
4.0 KiB
C#
136 lines
4.0 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="FormParameter.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.WebControls {
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using System;
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.Data;
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/// <devdoc>
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/// Represents a Parameter that gets its value from the application's form parameters.
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/// </devdoc>
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[
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DefaultProperty("FormField"),
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]
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public class FormParameter : Parameter {
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/// <devdoc>
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/// Creates an instance of the FormParameter class.
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/// </devdoc>
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public FormParameter() {
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}
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/// <devdoc>
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/// Creates an instance of the FormParameter class with the specified parameter name and form field.
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/// </devdoc>
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public FormParameter(string name, string formField) : base(name) {
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FormField = formField;
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}
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/// <devdoc>
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/// Creates an instance of the FormParameter class with the specified parameter name, database type, and
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/// form field.
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/// </devdoc>
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public FormParameter(string name, DbType dbType, string formField)
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: base(name, dbType) {
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FormField = formField;
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}
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/// <devdoc>
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/// Creates an instance of the FormParameter class with the specified parameter name, type, and form field.
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/// </devdoc>
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public FormParameter(string name, TypeCode type, string formField) : base(name, type) {
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FormField = formField;
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}
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/// <devdoc>
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/// Used to clone a parameter.
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/// </devdoc>
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protected FormParameter(FormParameter original) : base(original) {
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FormField = original.FormField;
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ValidateInput = original.ValidateInput;
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}
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/// <devdoc>
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/// The name of the form parameter to get the value from.
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/// </devdoc>
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[
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DefaultValue(""),
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WebCategory("Parameter"),
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WebSysDescription(SR.FormParameter_FormField),
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]
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public string FormField {
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get {
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object o = ViewState["FormField"];
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if (o == null)
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return String.Empty;
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return (string)o;
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}
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set {
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if (FormField != value) {
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ViewState["FormField"] = value;
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OnParameterChanged();
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}
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}
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}
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/// <devdoc>
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/// Creates a new FormParameter that is a copy of this FormParameter.
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/// </devdoc>
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protected override Parameter Clone() {
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return new FormParameter(this);
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}
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/// <devdoc>
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/// Returns the updated value of the parameter.
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/// </devdoc>
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protected internal override object Evaluate(HttpContext context, Control control) {
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if (context == null || context.Request == null) {
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return null;
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}
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NameValueCollection formCollection = ValidateInput ? context.Request.Form : context.Request.Unvalidated.Form;
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return formCollection[FormField];
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}
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/// <summary>
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/// Determines whether the parameter's value is being validated or not.
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/// </summary>
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[
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WebCategory("Behavior"),
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WebSysDescription(SR.Parameter_ValidateInput),
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DefaultValue(true)
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]
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public bool ValidateInput {
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get {
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object o = ViewState["ValidateInput"];
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if (o == null)
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return true;
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return (bool)o;
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}
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set {
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if (ValidateInput != value) {
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ViewState["ValidateInput"] = value;
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OnParameterChanged();
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}
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}
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}
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}
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}
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