Add Generic Spanish (es) Internationalization Support

INTERNATIONALIZATION.md

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+# Internationalization (i18n) Support
+
+Majorsilence Reporting includes internationalization support for multiple languages through .NET resource files (.resx).
+
+## Supported Languages
+
+The following languages are currently supported:
+
+- **English (en-US)** - Default/Base language
+- **Russian (ru-RU)** - Full translation
+- **French (fr)** - Partial translation
+- **Spanish (es)** - NEW! Full translation with 453+ translated strings
+
+## Language Configuration
+
+### Setting the Language in the Report Designer
+
+1. Open the Report Designer
+2. Navigate to **Tools** → **Options** 
+3. In the **Desktop** tab, select your preferred language from the Language dropdown
+4. Restart the application for changes to take effect
+
+### Setting the Language Programmatically
+
+The language is determined by the current thread's `CurrentCulture` and `CurrentUICulture`. You can set it in your application:
+
+```csharp
+using System.Globalization;
+using System.Threading;
+
+// Set Spanish as the UI language
+var culture = new CultureInfo("es");
+Thread.CurrentThread.CurrentCulture = culture;
+Thread.CurrentThread.CurrentUICulture = culture;
+```
+
+For ASP.NET applications:
+
+```csharp
+using System.Globalization;
+
+// In your Startup.cs or Program.cs
+var supportedCultures = new[] { "en-US", "ru-RU", "fr", "es" };
+var localizationOptions = new RequestLocalizationOptions()
+    .SetDefaultCulture("en-US")
+    .AddSupportedCultures(supportedCultures)
+    .AddSupportedUICultures(supportedCultures);
+
+app.UseRequestLocalization(localizationOptions);
+```
+
+## Translation Coverage
+
+### Spanish (es)
+
+The es translation includes:
+
+- ✅ **Core Engine** (RdlEngine) - Error messages, data processing strings
+- ✅ **Report Viewer** (RdlViewer) - UI elements, viewer controls
+- ✅ **Report Designer** (RdlDesign) - All designer dialogs and controls
+- ✅ **Map Editor** (RdlMapFile) - Map file editor interface
+- ✅ **Report Reader** (RdlReader) - Reader application UI
+
+**Total: 453+ translated strings across 79 resource files**
+
+Common translations include:
+- UI buttons and menus (Open, Save, Close, Print, etc.)
+- Error messages and warnings
+- Report elements (Table, Chart, Matrix, Subreport, etc.)
+- Data operations (Grouping, Sorting, Filtering, etc.)
+- Formatting options (Font, Style, Border, Background, etc.)
+
+## Adding a New Language
+
+To add support for a new language:
+
+1. **Identify the language code** (e.g., `de-DE` for German, `pt-BR` for Portuguese-Brazil)
+
+2. **Copy existing resource files**: For each base `.resx` file, create a new file with your language code:
+   ```
+   Strings.resx → Strings.[language-code].resx
+   ```
+
+3. **Translate strings**: Open the `.resx` files and translate the `<value>` elements while keeping the `<data name>` attributes unchanged.
+
+4. **Test your translation**:
+   - Build the solution
+   - Set the culture in your application
+   - Verify translations appear correctly in the UI
+
+5. **Submit a Pull Request**: Share your translation with the community!
+
+## Resource File Locations
+
+Resource files are located in the following directories:
+
+- `RdlEngine/Resources/` - Core engine strings
+- `RdlViewer/Resources/` - Viewer component strings
+- `RdlDesign/Resources/` - Designer main strings
+- `RdlDesign/*.resx` - Individual control/dialog translations
+- `RdlMapFile/Resources/` - Map editor strings
+- `RdlReader/Resources/` - Reader application strings
+- `RdlDesktop/Resources/` - Desktop application strings
+
+## Translation Guidelines
+
+When contributing translations:
+
+1. **Be consistent** with terminology across all resource files
+2. **Use appropriate locale** conventions (date formats, number formats, etc.)
+3. **Keep technical terms** in English when appropriate (e.g., SQL, HTML, XML)
+4. **Preserve placeholders** like `{0}`, `{1}` in format strings
+5. **Test thoroughly** especially with longer translations that might affect UI layout
+6. **Consider cultural context** - use translations appropriate for the target region
+
+## Known Issues
+
+- Some UI elements may require application restart to display translated text
+- Very long translations may cause layout issues in some dialogs
+- Not all third-party controls support full internationalization
+
+## Contributing
+
+We welcome translations for new languages! Please see our [Contributing Guide](https://github.com/majorsilence/My-FyiReporting/wiki/Contribute) for more information.
+
+To contribute a translation:
+
+1. Fork the repository
+2. Create a new branch for your translation
+3. Add your translated resource files
+4. Test the translation
+5. Submit a pull request with a description of your changes
+
+## Resources
+
+- [.NET Globalization and Localization](https://docs.microsoft.com/en-us/dotnet/core/extensions/globalization-and-localization)
+- [ResX Resource File Format](https://docs.microsoft.com/en-us/dotnet/framework/resources/creating-resource-files-for-desktop-apps#resources-in-resx-files)
+- [CultureInfo Class](https://docs.microsoft.com/en-us/dotnet/api/system.globalization.cultureinfo)
+
+## Support
+
+If you have questions about internationalization or need help with translations:
+
+- [Discussion Forum](https://groups.google.com/d/forum/myfyireporting)
+- [GitHub Issues](https://github.com/majorsilence/My-FyiReporting/issues)
+- [Wiki](https://github.com/majorsilence/My-FyiReporting/wiki)

RdlDesign/BackgroundCtl.es.resx

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+<?xml version='1.0' encoding='utf-8'?>
+<root xmlns:ns1="urn:schemas-microsoft-com:xml-msdata" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+
+  <xs:schema id="root">
+    <xs:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xs:element name="root" ns1:IsDataSet="true">
+      <xs:complexType>
+        <xs:choice maxOccurs="unbounded">
+          <xs:element name="metadata">
+            <xs:complexType>
+              <xs:sequence>
+                <xs:element name="value" type="xsd:string" minOccurs="0" />
+              </xs:sequence>
+              <xs:attribute name="name" use="required" type="xsd:string" />
+              <xs:attribute name="type" type="xsd:string" />
+              <xs:attribute name="mimetype" type="xsd:string" />
+              <xs:attribute ref="xml:space" />
+            </xs:complexType>
+          </xs:element>
+          <xs:element name="assembly">
+            <xs:complexType>
+              <xs:attribute name="alias" type="xsd:string" />
+              <xs:attribute name="name" type="xsd:string" />
+            </xs:complexType>
+          </xs:element>
+          <xs:element name="data">
+            <xs:complexType>
+              <xs:sequence>
+                <xs:element name="value" type="xsd:string" minOccurs="0" ns1:Ordinal="1" />
+                <xs:element name="comment" type="xsd:string" minOccurs="0" ns1:Ordinal="2" />
+              </xs:sequence>
+              <xs:attribute name="name" type="xsd:string" use="required" ns1:Ordinal="1" />
+              <xs:attribute name="type" type="xsd:string" ns1:Ordinal="3" />
+              <xs:attribute name="mimetype" type="xsd:string" ns1:Ordinal="4" />
+              <xs:attribute ref="xml:space" />
+            </xs:complexType>
+          </xs:element>
+          <xs:element name="resheader">
+            <xs:complexType>
+              <xs:sequence>
+                <xs:element name="value" type="xsd:string" minOccurs="0" ns1:Ordinal="1" />
+              </xs:sequence>
+              <xs:attribute name="name" type="xsd:string" use="required" />
+            </xs:complexType>
+          </xs:element>
+        </xs:choice>
+      </xs:complexType>
+    </xs:element>
+  </xs:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <assembly alias="System.Drawing" name="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
+  <data name="label15.Size" type="System.Drawing.Size, System.Drawing">
+    <value>88, 16</value>
+  </data>
+  <data name="label15.Text" xml:space="preserve">
+    <value>End Color</value>
+  </data>
+  <data name="label10.Size" type="System.Drawing.Size, System.Drawing">
+    <value>74, 16</value>
+  </data>
+  <data name="label10.Text" xml:space="preserve">
+    <value>Degradado</value>
+  </data>
+  <data name="label3.Text" xml:space="preserve">
+    <value>Color</value>
+  </data>
+  <data name="groupBox1.Text" xml:space="preserve">
+    <value>Fondo</value>
+  </data>
+  <data name="groupBox2.Text" xml:space="preserve">
+    <value>Background Image Source</value>
+  </data>
+  <data name="bRepeatExpr.Location" type="System.Drawing.Point, System.Drawing">
+    <value>228, 184</value>
+  </data>
+  <data name="rbNone.Size" type="System.Drawing.Size, System.Drawing">
+    <value>90, 24</value>
+  </data>
+  <data name="rbNone.Text" xml:space="preserve">
+    <value>Ausente</value>
+  </data>
+  <data name="cbRepeat.Location" type="System.Drawing.Point, System.Drawing">
+    <value>102, 184</value>
+  </data>
+  <data name="label1.Size" type="System.Drawing.Size, System.Drawing">
+    <value>74, 23</value>
+  </data>
+  <data name="label1.Text" xml:space="preserve">
+    <value>Repetición</value>
+  </data>
+  <data name="bMimeExpr.Location" type="System.Drawing.Point, System.Drawing">
+    <value>198, 121</value>
+  </data>
+  <data name="tbValueExternal.Location" type="System.Drawing.Point, System.Drawing">
+    <value>102, 55</value>
+  </data>
+  <data name="tbValueExternal.Size" type="System.Drawing.Size, System.Drawing">
+    <value>268, 20</value>
+  </data>
+  <data name="cbValueDatabase.Location" type="System.Drawing.Point, System.Drawing">
+    <value>102, 151</value>
+  </data>
+  <data name="cbValueDatabase.Size" type="System.Drawing.Size, System.Drawing">
+    <value>268, 21</value>
+  </data>
+  <data name="cbMIMEType.Location" type="System.Drawing.Point, System.Drawing">
+    <value>102, 119</value>
+  </data>
+  <data name="cbValueEmbedded.Location" type="System.Drawing.Point, System.Drawing">
+    <value>102, 87</value>
+  </data>
+  <data name="cbValueEmbedded.Size" type="System.Drawing.Size, System.Drawing">
+    <value>268, 21</value>
+  </data>
+  <data name="rbDatabase.Size" type="System.Drawing.Size, System.Drawing">
+    <value>90, 24</value>
+  </data>
+  <data name="rbDatabase.Text" xml:space="preserve">
+    <value>Base de datos</value>
+  </data>
+  <data name="rbEmbedded.Size" type="System.Drawing.Size, System.Drawing">
+    <value>90, 24</value>
+  </data>
+  <data name="rbEmbedded.Text" xml:space="preserve">
+    <value>Incrustado</value>
+  </data>
+  <data name="rbExternal.Text" xml:space="preserve">
+    <value>Externo</value>
+  </data>
+</root>

RdlDesign/BodyCtl.es.resx

@@ -0,0 +1,106 @@
+<?xml version='1.0' encoding='utf-8'?>
+<root xmlns:ns1="urn:schemas-microsoft-com:xml-msdata" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+
+  <xs:schema id="root">
+    <xs:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xs:element name="root" ns1:IsDataSet="true">
+      <xs:complexType>
+        <xs:choice maxOccurs="unbounded">
+          <xs:element name="metadata">
+            <xs:complexType>
+              <xs:sequence>
+                <xs:element name="value" type="xsd:string" minOccurs="0" />
+              </xs:sequence>
+              <xs:attribute name="name" use="required" type="xsd:string" />
+              <xs:attribute name="type" type="xsd:string" />
+              <xs:attribute name="mimetype" type="xsd:string" />
+              <xs:attribute ref="xml:space" />
+            </xs:complexType>
+          </xs:element>
+          <xs:element name="assembly">
+            <xs:complexType>
+              <xs:attribute name="alias" type="xsd:string" />
+              <xs:attribute name="name" type="xsd:string" />
+            </xs:complexType>
+          </xs:element>
+          <xs:element name="data">
+            <xs:complexType>
+              <xs:sequence>
+                <xs:element name="value" type="xsd:string" minOccurs="0" ns1:Ordinal="1" />
+                <xs:element name="comment" type="xsd:string" minOccurs="0" ns1:Ordinal="2" />
+              </xs:sequence>
+              <xs:attribute name="name" type="xsd:string" use="required" ns1:Ordinal="1" />
+              <xs:attribute name="type" type="xsd:string" ns1:Ordinal="3" />
+              <xs:attribute name="mimetype" type="xsd:string" ns1:Ordinal="4" />
+              <xs:attribute ref="xml:space" />
+            </xs:complexType>
+          </xs:element>
+          <xs:element name="resheader">
+            <xs:complexType>
+              <xs:sequence>
+                <xs:element name="value" type="xsd:string" minOccurs="0" ns1:Ordinal="1" />
+              </xs:sequence>
+              <xs:attribute name="name" type="xsd:string" use="required" />
+            </xs:complexType>
+          </xs:element>
+        </xs:choice>
+      </xs:complexType>
+    </xs:element>
+  </xs:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <assembly alias="System.Drawing" name="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
+  <data name="label1.Location" type="System.Drawing.Point, System.Drawing">
+    <value>119, 25</value>
+  </data>
+  <data name="label1.Text" xml:space="preserve">
+    <value>Altura</value>
+  </data>
+  <data name="label1.TextAlign" type="System.Drawing.ContentAlignment, System.Drawing">
+    <value>TopRight</value>
+  </data>
+  <data name="label2.Location" type="System.Drawing.Point, System.Drawing">
+    <value>119, 61</value>
+  </data>
+  <data name="label2.Text" xml:space="preserve">
+    <value>Columns</value>
+  </data>
+  <data name="label2.TextAlign" type="System.Drawing.ContentAlignment, System.Drawing">
+    <value>TopRight</value>
+  </data>
+  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <data name="label3.ImeMode" type="System.Windows.Forms.ImeMode, System.Windows.Forms">
+    <value>NoControl</value>
+  </data>
+  <data name="label3.Location" type="System.Drawing.Point, System.Drawing">
+    <value>3, 96</value>
+  </data>
+  <data name="label3.Size" type="System.Drawing.Size, System.Drawing">
+    <value>172, 23</value>
+  </data>
+  <data name="label3.Text" xml:space="preserve">
+    <value>Column Spacing</value>
+  </data>
+  <data name="label3.TextAlign" type="System.Drawing.ContentAlignment, System.Drawing">
+    <value>TopRight</value>
+  </data>
+  <data name="tbHeight.Location" type="System.Drawing.Point, System.Drawing">
+    <value>181, 22</value>
+  </data>
+  <data name="tbColumns.Location" type="System.Drawing.Point, System.Drawing">
+    <value>181, 58</value>
+  </data>
+  <data name="tbColumnSpacing.Location" type="System.Drawing.Point, System.Drawing">
+    <value>181, 93</value>
+  </data>
+</root>