Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / xsp / System / Web / UI / WebControls / ButtonField.cs / 1 / ButtonField.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing.Design;
using System.Globalization;
using System.Security.Permissions;
using System.Web.Util;
///
/// Creates a field with a set of
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class ButtonField : ButtonFieldBase {
private PropertyDescriptor textFieldDesc;
///
/// Initializes a new instance of the
///
public ButtonField() {
}
///
/// Gets or sets the command to perform when this
///
[
WebCategory("Behavior"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.WebControl_CommandName)
]
public virtual string CommandName {
get {
object o = ViewState["CommandName"];
if (o != null)
return(string)o;
return string.Empty;
}
set {
if (!String.Equals(value, ViewState["CommandName"])) {
ViewState["CommandName"] = value;
OnFieldChanged();
}
}
}
///
/// Gets or sets the field name from the data model that is
/// bound to the
///
[
WebCategory("Data"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.ButtonField_DataTextField),
TypeConverter("System.Web.UI.Design.DataSourceViewSchemaConverter, " + AssemblyRef.SystemDesign)
]
public virtual string DataTextField {
get {
object o = ViewState["DataTextField"];
if (o != null)
return(string)o;
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["DataTextField"])) {
ViewState["DataTextField"] = value;
OnFieldChanged();
}
}
}
///
/// Gets or sets the string used to format the data bound to
/// the
///
[
WebCategory("Data"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.ButtonField_DataTextFormatString)
]
public virtual string DataTextFormatString {
get {
object o = ViewState["DataTextFormatString"];
if (o != null)
return(string)o;
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["DataTextFormatString"])) {
ViewState["DataTextFormatString"] = value;
OnFieldChanged();
}
}
}
[
WebCategory("Appearance"),
DefaultValue(""),
Editor("System.Web.UI.Design.ImageUrlEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
WebSysDescriptionAttribute(SR.ButtonField_ImageUrl),
UrlProperty()
]
public virtual string ImageUrl {
get {
object o = ViewState["ImageUrl"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["ImageUrl"])) {
ViewState["ImageUrl"] = value;
OnFieldChanged();
}
}
}
///
/// Gets or sets the caption text displayed on the
///
[
Localizable(true),
WebCategory("Appearance"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.ButtonField_Text)
]
public virtual string Text {
get {
object o = ViewState["Text"];
if (o != null)
return(string)o;
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["Text"])) {
ViewState["Text"] = value;
OnFieldChanged();
}
}
}
protected override void CopyProperties(DataControlField newField) {
((ButtonField)newField).CommandName = CommandName;
((ButtonField)newField).DataTextField = DataTextField;
((ButtonField)newField).DataTextFormatString = DataTextFormatString;
((ButtonField)newField).ImageUrl = ImageUrl;
((ButtonField)newField).Text = Text;
base.CopyProperties(newField);
}
protected override DataControlField CreateField() {
return new ButtonField();
}
///
///
protected virtual string FormatDataTextValue(object dataTextValue) {
string formattedTextValue = String.Empty;
if (!DataBinder.IsNull(dataTextValue)) {
string formatting = DataTextFormatString;
if (formatting.Length == 0) {
formattedTextValue = dataTextValue.ToString();
}
else {
formattedTextValue = String.Format(CultureInfo.CurrentCulture, formatting, dataTextValue);
}
}
return formattedTextValue;
}
///
///
public override bool Initialize(bool sortingEnabled, Control control) {
base.Initialize(sortingEnabled, control);
textFieldDesc = null;
return false;
}
///
/// Initializes a cell in the
///
public override void InitializeCell(DataControlFieldCell cell, DataControlCellType cellType, DataControlRowState rowState, int rowIndex) {
base.InitializeCell(cell, cellType, rowState, rowIndex);
if ((cellType != DataControlCellType.Header) &&
(cellType != DataControlCellType.Footer)) {
IButtonControl button;
IPostBackContainer container = Control as IPostBackContainer;
bool causesValidation = CausesValidation;
bool setCausesValidation = true; // the setter on the DataControlButtons throw if there's a container for security
switch(ButtonType) {
case ButtonType.Link: {
if (container != null && !causesValidation) {
button = new DataControlLinkButton(container);
setCausesValidation = false;
}
else {
// use DataControlLinkButton because it uses the right forecolor
button = new DataControlLinkButton(null);
}
break;
}
case ButtonType.Button: {
if (container != null && !causesValidation) {
button = new DataControlButton(container);
setCausesValidation = false;
}
else {
button = new Button();
}
break;
}
case ButtonType.Image:
default: {
if (container != null && !causesValidation) {
button = new DataControlImageButton(container);
setCausesValidation = false;
}
else {
button = new ImageButton();
}
((ImageButton)button).ImageUrl = ImageUrl;
break;
}
}
button.Text = Text;
button.CommandName = CommandName;
button.CommandArgument = rowIndex.ToString(CultureInfo.InvariantCulture);
if (setCausesValidation) {
button.CausesValidation = causesValidation;
}
button.ValidationGroup = ValidationGroup;
if (DataTextField.Length != 0 && Visible) {
((WebControl)button).DataBinding += new EventHandler(this.OnDataBindField);
}
cell.Controls.Add((WebControl)button);
}
}
///
///
private void OnDataBindField(object sender, EventArgs e) {
Debug.Assert(DataTextField.Length != 0, "Shouldn't be DataBinding without a DataTextField");
Control boundControl = (Control)sender;
Control controlContainer = boundControl.NamingContainer;
string dataValue;
object dataItem = null;
if (controlContainer == null) {
throw new HttpException(SR.GetString(SR.DataControlField_NoContainer));
}
// Get the DataItem from the container
dataItem = DataBinder.GetDataItem(controlContainer);
if (dataItem == null && !DesignMode) {
throw new HttpException(SR.GetString(SR.DataItem_Not_Found));
}
if (textFieldDesc == null && dataItem != null) {
string dataField = DataTextField;
textFieldDesc = TypeDescriptor.GetProperties(dataItem).Find(dataField, true);
if ((textFieldDesc == null) && !DesignMode) {
throw new HttpException(SR.GetString(SR.Field_Not_Found, dataField));
}
}
if (textFieldDesc != null && dataItem != null) {
object data = textFieldDesc.GetValue(dataItem);
dataValue = FormatDataTextValue(data);
}
else {
Debug.Assert(DesignMode == true);
dataValue = SR.GetString(SR.Sample_Databound_Text);
}
Debug.Assert(boundControl is IButtonControl, "Expected the bound control to be an IButtonControl");
((IButtonControl)boundControl).Text = dataValue;
}
///
/// Override with an empty body if the field's controls all support callback.
/// Otherwise, override and throw a useful error message about why the field can't support callbacks.
///
public override void ValidateSupportsCallback() {
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing.Design;
using System.Globalization;
using System.Security.Permissions;
using System.Web.Util;
///
/// Creates a field with a set of
///
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class ButtonField : ButtonFieldBase {
private PropertyDescriptor textFieldDesc;
///
/// Initializes a new instance of the
///
public ButtonField() {
}
///
/// Gets or sets the command to perform when this
///
[
WebCategory("Behavior"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.WebControl_CommandName)
]
public virtual string CommandName {
get {
object o = ViewState["CommandName"];
if (o != null)
return(string)o;
return string.Empty;
}
set {
if (!String.Equals(value, ViewState["CommandName"])) {
ViewState["CommandName"] = value;
OnFieldChanged();
}
}
}
///
/// Gets or sets the field name from the data model that is
/// bound to the
///
[
WebCategory("Data"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.ButtonField_DataTextField),
TypeConverter("System.Web.UI.Design.DataSourceViewSchemaConverter, " + AssemblyRef.SystemDesign)
]
public virtual string DataTextField {
get {
object o = ViewState["DataTextField"];
if (o != null)
return(string)o;
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["DataTextField"])) {
ViewState["DataTextField"] = value;
OnFieldChanged();
}
}
}
///
/// Gets or sets the string used to format the data bound to
/// the
///
[
WebCategory("Data"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.ButtonField_DataTextFormatString)
]
public virtual string DataTextFormatString {
get {
object o = ViewState["DataTextFormatString"];
if (o != null)
return(string)o;
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["DataTextFormatString"])) {
ViewState["DataTextFormatString"] = value;
OnFieldChanged();
}
}
}
[
WebCategory("Appearance"),
DefaultValue(""),
Editor("System.Web.UI.Design.ImageUrlEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
WebSysDescriptionAttribute(SR.ButtonField_ImageUrl),
UrlProperty()
]
public virtual string ImageUrl {
get {
object o = ViewState["ImageUrl"];
if (o != null) {
return (string)o;
}
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["ImageUrl"])) {
ViewState["ImageUrl"] = value;
OnFieldChanged();
}
}
}
///
/// Gets or sets the caption text displayed on the
///
[
Localizable(true),
WebCategory("Appearance"),
DefaultValue(""),
WebSysDescriptionAttribute(SR.ButtonField_Text)
]
public virtual string Text {
get {
object o = ViewState["Text"];
if (o != null)
return(string)o;
return String.Empty;
}
set {
if (!String.Equals(value, ViewState["Text"])) {
ViewState["Text"] = value;
OnFieldChanged();
}
}
}
protected override void CopyProperties(DataControlField newField) {
((ButtonField)newField).CommandName = CommandName;
((ButtonField)newField).DataTextField = DataTextField;
((ButtonField)newField).DataTextFormatString = DataTextFormatString;
((ButtonField)newField).ImageUrl = ImageUrl;
((ButtonField)newField).Text = Text;
base.CopyProperties(newField);
}
protected override DataControlField CreateField() {
return new ButtonField();
}
///
///
protected virtual string FormatDataTextValue(object dataTextValue) {
string formattedTextValue = String.Empty;
if (!DataBinder.IsNull(dataTextValue)) {
string formatting = DataTextFormatString;
if (formatting.Length == 0) {
formattedTextValue = dataTextValue.ToString();
}
else {
formattedTextValue = String.Format(CultureInfo.CurrentCulture, formatting, dataTextValue);
}
}
return formattedTextValue;
}
///
///
public override bool Initialize(bool sortingEnabled, Control control) {
base.Initialize(sortingEnabled, control);
textFieldDesc = null;
return false;
}
///
/// Initializes a cell in the
///
public override void InitializeCell(DataControlFieldCell cell, DataControlCellType cellType, DataControlRowState rowState, int rowIndex) {
base.InitializeCell(cell, cellType, rowState, rowIndex);
if ((cellType != DataControlCellType.Header) &&
(cellType != DataControlCellType.Footer)) {
IButtonControl button;
IPostBackContainer container = Control as IPostBackContainer;
bool causesValidation = CausesValidation;
bool setCausesValidation = true; // the setter on the DataControlButtons throw if there's a container for security
switch(ButtonType) {
case ButtonType.Link: {
if (container != null && !causesValidation) {
button = new DataControlLinkButton(container);
setCausesValidation = false;
}
else {
// use DataControlLinkButton because it uses the right forecolor
button = new DataControlLinkButton(null);
}
break;
}
case ButtonType.Button: {
if (container != null && !causesValidation) {
button = new DataControlButton(container);
setCausesValidation = false;
}
else {
button = new Button();
}
break;
}
case ButtonType.Image:
default: {
if (container != null && !causesValidation) {
button = new DataControlImageButton(container);
setCausesValidation = false;
}
else {
button = new ImageButton();
}
((ImageButton)button).ImageUrl = ImageUrl;
break;
}
}
button.Text = Text;
button.CommandName = CommandName;
button.CommandArgument = rowIndex.ToString(CultureInfo.InvariantCulture);
if (setCausesValidation) {
button.CausesValidation = causesValidation;
}
button.ValidationGroup = ValidationGroup;
if (DataTextField.Length != 0 && Visible) {
((WebControl)button).DataBinding += new EventHandler(this.OnDataBindField);
}
cell.Controls.Add((WebControl)button);
}
}
///
///
private void OnDataBindField(object sender, EventArgs e) {
Debug.Assert(DataTextField.Length != 0, "Shouldn't be DataBinding without a DataTextField");
Control boundControl = (Control)sender;
Control controlContainer = boundControl.NamingContainer;
string dataValue;
object dataItem = null;
if (controlContainer == null) {
throw new HttpException(SR.GetString(SR.DataControlField_NoContainer));
}
// Get the DataItem from the container
dataItem = DataBinder.GetDataItem(controlContainer);
if (dataItem == null && !DesignMode) {
throw new HttpException(SR.GetString(SR.DataItem_Not_Found));
}
if (textFieldDesc == null && dataItem != null) {
string dataField = DataTextField;
textFieldDesc = TypeDescriptor.GetProperties(dataItem).Find(dataField, true);
if ((textFieldDesc == null) && !DesignMode) {
throw new HttpException(SR.GetString(SR.Field_Not_Found, dataField));
}
}
if (textFieldDesc != null && dataItem != null) {
object data = textFieldDesc.GetValue(dataItem);
dataValue = FormatDataTextValue(data);
}
else {
Debug.Assert(DesignMode == true);
dataValue = SR.GetString(SR.Sample_Databound_Text);
}
Debug.Assert(boundControl is IButtonControl, "Expected the bound control to be an IButtonControl");
((IButtonControl)boundControl).Text = dataValue;
}
///
/// Override with an empty body if the field's controls all support callback.
/// Otherwise, override and throw a useful error message about why the field can't support callbacks.
///
public override void ValidateSupportsCallback() {
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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