Thursday 11 October 2018

Date time Picker / Calendar in ASP.Net Visual Studio with Jquery with Sample Code

DateTime Picker / Calendar in ASP.Net Visual Studio with Jquery with Sample Code

Step 1 - Download Jquery utility used in this Sample Project
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Step 2 - Extract the above Jquery.rar And Put it in your project folder
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Step 3 - Create a class file JQueryUtils under Util namespace as follows 

using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

 namespace Util
{
    public class JQueryUtils
    {
        public static void RegisterTextBoxForDatePicker(Page page, params TextBox[] textBoxes)
        {
            RegisterTextBoxForDatePicker(page, "dd/mm/yy", textBoxes);
        }

         public static void RegisterTextBoxForDatePicker(Page page, string format, params TextBox[] textBoxes)
        {
            bool allTextBoxNull = true;
            foreach (TextBox textBox in textBoxes)
            {
                if (textBox != null) allTextBoxNull = false;
            }

             if (allTextBoxNull) return;

             page.ClientScript.RegisterClientScriptInclude(page.GetType(), "jquery", "JQuery/jquery.js");
            page.ClientScript.RegisterClientScriptInclude(page.GetType(), "jquery.ui.all", "JQuery/ui/jquery.ui.all.js");
            page.ClientScript.RegisterClientScriptBlock(page.GetType(), "datepickerCss", "<link  rel=\"stylesheet\" href=\"JQuery/themes/flora/flora.datepicker.css\" />");

             StringBuilder sb = new StringBuilder();
            sb.Append("$(document).ready(function() {");
            foreach (TextBox textBox in textBoxes)
            {
                if (textBox != null)
                {
                    sb.Append("$('#" + textBox.ClientID + "').datepicker({dateFormat: \"" + format + "\"});");
                }
            }
            sb.Append("});");
            page.ClientScript.RegisterClientScriptBlock(page.GetType(), "jQueryScript", sb.ToString(), true);
        }
    }
}
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Step 4 - Now on your .aspx page let suppose it is Default.aspx,  add a text box control as follow -

 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Date Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    </form>
</body>

</html>
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Step 5 - Now in the code page of above .aspx page (step4) Default.aspx.cs add following line of code in page load event 

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Util.JQueryUtils.RegisterTextBoxForDatePicker(Page, TextBox1);  
    }
}

* Please note above underline control name is same as in .aspx page.
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Wednesday 3 October 2018

Execute SQL queries with a batch file or Command Line



Execute SQL queries with a batch file or Command Line

  • OSQL is a command line tool that allows you to issue commands to Microsoft SQL Server.
  • The OSQL allows you to enter Transact-SQL statements, system procedures, and script files.  This utility uses ODBC to communicate with the server.
  •  Once you have the OSQL command written, save the entire line into a file with a .bat extension.

Command Arguments:
-S (SQL Server\Instance name) Ex. -S nicsw5\SQL Express
-E (Uses a trusted connection instead of requesting a password)
-U (Login ID)
-P (Password)
-i (Input file) Ex. -i "c:\Folder\Script.sql"
-o (Output file) Ex. -o "c:\Folder\ScriptLog.txt"

Syntax :

  • Using Windows Authentication
osql -S nicsw5\SQL Express -E  -i "c:\Script_file.sql" -o "c:\Script_file_log.txt"

  •  Using SQL Authentication
osql -S nicsw5\SQL Express -U sql_user -P sql_password  -i "c:\Script_file.sql" -o "c:\Script_file_log.txt"


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Monday 24 September 2018

Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)


Please Use Following code in your web config just before </configuration> section


 <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
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Sunday 16 September 2018

Convert C# Data table into JSON format. (VS2010, Newtonsoft JSON)

There are 3 Ways to Convert DataTable to JSON String in ASP.NET C#
  1. Convert DataTable to JSON using StringBuilder.
  2. Convert DataTable to JSON using JavaScriptSerializer.
  3. Convert DataTable to JSON using JSON.Net DLL.

Method 1
Convert DataTable to JSON using StringBuilder. 
This is how the JSON sample data looks: {"firstName":"Chandra", "lastName":"Kant"}.
JSON objects are written inside curly braces and can contain multiple name/values pairs.
So using StringBuilder we can create a similar JSON Structured String.
Since we are using StringBuilder we need to import the System.Text namespace in our page as in the following:


Using System.Text;  



The following code will generate a JSON string. Here we are making a for loop over our DataTable rows and columns. Fetch the data (values) and append it to our JSONString StringBuilder. This is how our code looks:

public string DataTableToJSONWithStringBuilder(DataTable table)   

{  
    var JSONString = new StringBuilder();  
    if (table.Rows.Count > 0)   
    {  
        JSONString.Append("[");  
        for (int i = 0; i < table.Rows.Count; i++)   
        {  
            JSONString.Append("{");  
            for (int j = 0; j < table.Columns.Count; j++)   
            {  
                if (j < table.Columns.Count - 1)   
                {  
                    JSONString.Append("\"" + table.Columns[j].ColumnName.ToString() + "\":" + "\"" + table.Rows[i][j].ToString() + "\",");  
                }   
                else if (j == table.Columns.Count - 1)   
                {  
                    JSONString.Append("\"" + table.Columns[j].ColumnName.ToString() + "\":" + "\"" + table.Rows[i][j].ToString() + "\"");  
                }  
            }  
            if (i == table.Rows.Count - 1)   
            {  
                JSONString.Append("}");  
            }   
            else   
            {  
                JSONString.Append("},");  
            }  
        }  
        JSONString.Append("]");  
    }  
    return JSONString.ToString();  
}  


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Method 2

Convert the DataTable to JSON using JavaScriptSerializer.
Since we are using JavaScriptSerializer we first need to import the System.Web.Script.Serialization namespace into our page as in the following code:



using System.Web.Script.Serialization; 



The JavaScriptSerializer class is used internally by the asynchronous communication layer to serialize and deserialize the data.

To serialize an object, use the Serialize method. To deserialize a JSON string, use the Deserialize or DeserializeObject methods.



Here we use the serialize method to get the JSON format data. So our code looks as in the following:

public string DataTableToJSONWithJavaScriptSerializer(DataTable table) 
{  
    JavaScriptSerializer jsSerializer = new JavaScriptSerializer();  
    List < Dictionary < string, object >> parentRow = new List < Dictionary < string, object >> ();  
    Dictionary < string, object > childRow;  
    foreach(DataRow row in table.Rows) 
    {  
        childRow = new Dictionary < string, object > ();  
        foreach(DataColumn col in table.Columns) 
        {  
            childRow.Add(col.ColumnName, row[col]);  
        }  
        parentRow.Add(childRow);  
    }  
    return jsSerializer.Serialize(parentRow);  
}  


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Method 3


Convert DataTable to JSON using JSON.Net DLL (Newtonsoft).


Now in this method, we will convert our C# Datatable to JSON using the Newtonsoft DLL.

For this first, we need to download JSON.Net DLL. We can download it from Nuget.org and then import the Newtonsoft.JSON namespace into our page as in the following code. JSON.NET is a popular high-performance JSON framework for .NET.

using Newtonsoft.JSON;  


public string DataTableToJSONWithJSONNet(DataTable table)
 {  
   string JSONString=string.Empty;  
   JSONString = JSONConvert.SerializeObject(table);  
   return JSONString;  
}  
Yes we are done with JSON,


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