DevExpress Add Combobox inside the Gridview column: Free Guide

Integrating a ComboBox inside a GridView column can significantly enhance the user experience in your application. This blog post explores how to Add Combobox inside the Gridview column

DevExpress is a comprehensive software development toolset known for its robust features and user-friendly interfaces. Among its many components, one standout feature is its ability to integrate ComboBox controls seamlessly within GridView columns. In this article, we’ll delve into the process of adding a ComboBox inside a GridView column using DevExpress, exploring its benefits, customization options, and best practices.

1. Introduction to DevExpress

DevExpress offers a suite of tools designed to streamline the software development process. It provides a wide range of UI controls and libraries that enhance the functionality and aesthetics of applications across various platforms.

2. What is a ComboBox?

A ComboBox, also known as a drop-down list or a combo box, is a graphical control element that allows users to select one option from a list of predefined choices. It combines the features of a text box and a list box, enabling users to either type a value directly or choose from the dropdown menu.

3. Why Add a ComboBox Inside a GridView Column?

Integrating a ComboBox within a GridView column offers numerous advantages in data management and user interaction. It provides users with a more intuitive way to input data and select options, enhancing the overall usability of the application.

4. Benefits of Using DevExpress ComboBox in GridView

  • Enhanced User Experience: DevExpress ComboBox offers a sleek and responsive interface, improving user satisfaction.
  • Efficient Data Entry: By providing a dropdown list of predefined options, ComboBox simplifies data entry and minimizes errors.
  • Seamless Integration: DevExpress seamlessly integrates ComboBox controls within GridView columns, ensuring a cohesive and professional-looking interface.
DevExpress Add Combobox inside the Gridview column
DevExpress Add Combobox inside the Gridview column

Example: Add Combobox inside the Gridview column

Grid view Column
 
settings.Columns.Add(col =>
{
    col.FieldName = "numID";
    col.Caption = "Creditor";
    col.Width = 200;
    col.SetEditItemTemplateContent(c =>
    {
          ViewContext.Writer.Write("<div id='divID'>");
          Html.RenderPartial("_cmbShipCostCreditorPartial");
          ViewContext.Writer.Write("</div>");
    }); 


});


Combobox Partial


@Html.DevExpress().ComboBox(settingsCB =>
{
    settingsCB.Name = "numShipCreditorCode";
    settingsCB.SelectedIndex = -1;
    settingsCB.ControlStyle.CssClass = "editor";
    settingsCB.Properties.DropDownStyle = DropDownStyle.DropDownList;
    settingsCB.CallbackRouteValues = new { Controller = "Controller Name", Action = "Action Name" };
    settingsCB.Properties.CallbackPageSize = 10;
    settingsCB.Properties.TextField = "A";
    settingsCB.Properties.ValueField = "B";
    settingsCB.Properties.ValueType = typeof(string);
    settingsCB.Width = 200;
 
    settingsCB.Properties.Columns.Add("A", "Code", 80);
    settingsCB.Properties.Columns.Add("B", "Name", 300);
  


    /// Bind Model Data Value
    settingsCB.PreRender += (s, e) =>
    {
        var cmbShpCostCrd = s as MVCxComboBox;
        cmbShpCostCrd.Value = Model;
        cmbShpCostCrd.DataBind();


        if (Convert.ToString(cmbShpCostCrd.Value) != "")
            cmbShpCostCrd.SelectedIndex = 1;
        else
            cmbShpCostCrd.SelectedIndex = -1;
    };   
}).BindList().Bind(Model).GetHtml()

5. Conclusion

Integrating a ComboBox inside a GridView column with DevExpress enhances the usability and functionality of data-driven applications. By following the step-by-step guide and best practices outlined in this article, developers can create intuitive and efficient user interfaces that improve the overall user experience.

FAQs

Q1: Can I add multiple ComboBoxes inside a single GridView column? Yes, DevExpress allows you to add multiple ComboBoxes within a single GridView column, facilitating more complex data entry scenarios.

Q2: Is DevExpress compatible with different data sources? Yes, DevExpress supports a wide range of data sources, including databases, collections, and web services, ensuring compatibility with various application architectures.

Q3: Can I customize the appearance of the ComboBox inside the GridView? Absolutely, DevExpress offers extensive customization options for ComboBox controls, allowing you to tailor the appearance to match your application’s design.

Q4: How can I handle data binding with DevExpress ComboBox? DevExpress provides intuitive data binding mechanisms, allowing you to bind ComboBox controls to data sources effortlessly.

Q5: Does DevExpress provide support for mobile applications? Yes, DevExpress offers robust support for mobile development, allowing you to create responsive and feature-rich applications for both iOS and Android platforms.

Increase SQL Performance When EXEC the Stored Procedure

In today’s digital landscape, where data reigns supreme, optimizing SQL performance is paramount for businesses aiming to stay competitive. Among the myriad strategies available, improving the execution of stored procedures stands out as a potent method to boost database efficiency and application responsiveness. Let’s delve into actionable tips and techniques to enhance SQL Performance When EXEC the Stored Procedure.

How to Increase SQL Performance When EXEC the Stored Procedure

Don’t use same parameter name in both stored procedure and executive level

                Ex: 

Performance When EXEC the Stored Procedure
SQL Performance When EXEC the Stored Procedure
Performance When EXEC the Stored Procedure
SQL Performance When EXEC the Stored Procedure

Issues:

  1. Readability: The code becomes less readable because it’s not clear which parameter corresponds to which value.
  2. Maintainability: If you later need to change the order of parameters in the stored procedure, you’d also need to update the calling code to match the new order, which can be time-consuming and error-prone.
  3. Errors: If you accidentally swap the order of the parameters when calling the procedure, it might update the wrong customer with the wrong email address.

Benefits:

  • Improved Readability: The code is easier to understand because it uses meaningful variable names that reflect their purpose.
  • Enhanced Maintainability: If the order of parameters in the stored procedure changes, you don’t need to modify the calling code as long as the parameter names remain distinct.
  • Reduced Errors: The explicit assignment reduces the chance of accidentally passing the wrong values to the procedure.

Don’t use Cursors

Use variable table Instead of temp table

Wherever casting is done on date column as shown below, should be changed

Change From :

Where CONVERT(DATETIME,CONVERT(VARCHAR(10),dteEndingDate,112)) between  CONVERT(DATETIME,CONVERT(VARCHAR(10),@fromDate,112)) and CONVERT(DATETIME,CONVERT(VARCHAR(10),@ToDate,112))

Change To :

Where dteEndingDate between  @fromDate +CAST('00:00:00'AS DATETIME)

and @ToDate +CAST('23:59:00'AS DATETIME)

Note: You may remove CAST() in parameter if not required here.

Performance Issues:

  • Multiple Calls: This approach requires several operations: opening/closing the cursor, fetching each record one by one, and potentially multiple update statements.
  • Locking: Cursors can lock rows as they’re processed, impacting other users if the table is heavily accessed.
  • Memory Usage: Cursors can hold all fetched data in memory, impacting performance for large datasets.

Data on the Difference:

There’s no single answer, but benchmarks often show a significant performance difference. Here’s an example:

  • Set-based update: Might take 2 seconds to execute for 10,000 records.
  • Cursor-based update: Could take 10-20 seconds (or more) for the same data due to the reasons mentioned above.

The Takeaway:

  • Set-based operations are generally faster and more efficient for bulk updates in SQL.
  • Cursors might be necessary in specific scenarios (e.g., processing hierarchical data), but they should be used cautiously and after exploring set-based alternatives.

Remember: Always profile your code to identify performance bottlenecks. If a cursor seems necessary, optimize it with techniques like forward-only cursors to minimize overhead.

Conclusion

In conclusion, enhancing the execution of stored procedures is a pivotal step in maximizing SQL performance and ensuring optimal database efficiency. By identifying performance bottlenecks, streamlining query execution, utilizing parameterized queries, and implementing robust error handling, businesses can significantly improve application responsiveness and user satisfaction. Adopting a proactive approach to SQL performance optimization and embracing best practices will empower organizations to stay ahead in today’s competitive digital landscape.