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Restore the lost focus of Auto post back controls in asp.net update Panel control

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Problem: We put  autopostback controls like textbox, DropDownList controls inside in update panel to reducing the flickering of the Page.but when user uses tab for entering the details  the focus of the control losts. Web site users who prefer to use keyboard need to use mouse to activate appropriate input box or press TAB multiple times. Solution: Step 1: Save following in js file give any name to it (like MyUpdatePanelFocus.js ) var lastFocusedControlId = ""; function focusHandler(e) { document.activeElement = e.originalTarget; } function appInit() { if (typeof (window.addEventListener) !== "undefined") { window.addEventListener("focus", focusHandler, true); } Sys.WebForms.PageRequestManager.getInstance().add_pageLoading(pageLoadingHandler); Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoadedHandler); } function pageLoadingHandler(sender, args) { lastFocusedControlId = typeof (document.acti...
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Use Chroma DB vector database in RAG application using llama index & Deepseek R1 local model

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 In previous article I have explained how to install Deepseek R1 model locally and create the RAG application using the locally downloaded models step by step. In this article I will explain Step-by-step to use the Chroma DB vector database in RAG application using llama index & Deepseek R1 local model with Ollama. Chroma DB is open source vector db which can be used to store the vector embeddings of documents and query the embeddings based on user query. I have used the same example used in previous article and added only Chroma DB integration code.   Prerequisites for this example is as follows: Visual studio code Python Ollama  Open visual studio code and create the file with name "sample.py". Now in visual studio code and go to terminal menu and click on New terminal link it will open new terminal. In terminal enter below command to install the LlamaIndex library, Chroma DB library, LlamaIndex Ollama and  LlamaIndex embedding Ollama library in your mac...
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I have created an application to extract text from image using AI

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 In this article, I am going to demonstrate how text is getting extracted from image file using Gemini AI model. Also, will explain how the application is developed with the help of chat GPT and some custom code.     Very first i gone to chatGPT application and added below prompts so that my application structure i can get the application code to start with. Following is the screenshot of the prompt i have written and answer given by chatGPT.    I have copied the code given by chat gpt and modified as per my requirement that means i got 70 to 80 percentage code to develop the application. Following are the Prerequisites required for development of this application : Visual studio code Python Api Key of Gemini can be obtain from https://aistudio.google.com    Open visual studio code and create the file with name " imagetextextractapp .py". Now in visual studio code and go to terminal menu and click on New terminal link it will open new terminal. In t...
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Download DeepSeek R1 Model Locally free | AI RAG with LlamaIndex, Local Embedding and Ollama

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In this article I will explain Step-by-step to locally download and use the DeepSeek R1 Model with Ollama for free! and also explain how to set up AI-powered Retrieval Augmented Generation (RAG) using the nomic-embed-text:latest  embedding model and run the DeepSeek R1 Model locally via Ollama .   Prerequisites for this example is as follows: Visual studio code Python Ollama  Open visual studio code and create the file with name "sample.py". Now in visual studio code and go to terminal menu and click on New terminal link it will open new terminal. In terminal enter below command to install the LlamaIndex library and LlamaIndex Ollama and  LlamaIndex embedding Ollama library in your machine. pip install llama-index llama-index-llms-ollama llama-index-embeddings-ollama Create the folder named "doc" in root directory of the application as shown in below image and store the documents you want to query.   To get Ollama models list you can visit ollama ...
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Add Comma automatically while entering amounts in textbox using Javascript

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Use following JavaScript function to add comma in numeric input in textbox function Comma(Num) { Num += ''; Num = Num.replace(/,/g, ''); x = Num.split('.'); x1 = x[0]; x2 = x.length > 1 ? '.' + x[1] : ''; var rgx = /(\d)((\d)(\d{2}?)+)$/; while (rgx.test(x1)) x1 = x1.replace(rgx, '$1' + ',' + '$2'); return x1 + x2; } Use following event of input textbox to call above function onkeyup = "javascript:this.value=Comma(this.value);"
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