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adminpublishermanagement.aspx.cs
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adminpublishermanagement.aspx.cs
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using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace ELibraryManagement
{
public partial class adminpublishermanagement : System.Web.UI.Page
{
string strcon = ConfigurationManager.ConnectionStrings["con"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
GridView1.DataBind();
}
//add button
protected void Button2_Click(object sender, EventArgs e)
{
if (checkIfPublisherExist())
{
Response.Write("<script>alert('Author with the same ID exist. Please try anyother authorID');</script>");
}
else
{
addNewPublisher();
}
}
//update button
protected void Button3_Click(object sender, EventArgs e)
{
if (checkIfPublisherExist())
{
updatePublisher();
}
else
{
Response.Write("<script>alert('Publisher Doesnot exist.');</script>");
}
}
//delete button
protected void Button4_Click(object sender, EventArgs e)
{
if (checkIfPublisherExist())
{
deletePublisher();
}
else
{
//addNewAuthor();
Response.Write("<script>alert('Author Doesnot exist.');</script>");
}
}
//user defined functions
void deletePublisher()
{
try
{
SqlConnection con = new SqlConnection(strcon);
if (con.State == System.Data.ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("DELETE from publisher_master_tbl WHERE publisher_id='" + TextBox1.Text.Trim() + "'", con);
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script>alert('Publisher deleted successfully');</script>");
clearForm();
GridView1.DataBind();
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}
void updatePublisher()
{
try
{
SqlConnection con = new SqlConnection(strcon);
if (con.State == System.Data.ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("UPDATE publisher_master_tbl SET publisher_name=@publisher_name WHERE publisher_id='" + TextBox1.Text.Trim() + "'", con);
cmd.Parameters.AddWithValue("@publisher_name", TextBox2.Text.Trim());
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script>alert('Publisher updated successfully');</script>");
clearForm();
GridView1.DataBind();
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}
void clearForm()
{
TextBox1.Text = "";
TextBox2.Text = "";
}
void addNewPublisher()
{
try
{
SqlConnection con = new SqlConnection(strcon);
if (con.State == System.Data.ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("INSERT INTO publisher_master_tbl(publisher_id,publisher_name) values" +
"(@publisher_id,@publisher_name)", con);
cmd.Parameters.AddWithValue("@publisher_id", TextBox1.Text.Trim());
cmd.Parameters.AddWithValue("@publisher_name", TextBox2.Text.Trim());
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script>alert('Publisher added successfully');</script>");
clearForm();
GridView1.DataBind();
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}
bool checkIfPublisherExist()
{
try
{
SqlConnection con = new SqlConnection(strcon);
if (con.State == System.Data.ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("Select * from publisher_master_tbl where publisher_id='" + TextBox1.Text.Trim() + "'", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count >= 1)
{
return true;
}
else
{
return false;
}
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
return false;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
getPublisherById();
}
void getPublisherById()
{
try
{
SqlConnection con = new SqlConnection(strcon);
if (con.State == System.Data.ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("Select * from publisher_master_tbl where publisher_id='" + TextBox1.Text.Trim() + "'", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count >= 1)
{
TextBox2.Text = dt.Rows[0][1].ToString();
}
else
{
Response.Write("<script>alert('Invalid PublisherID');</script>");
clearForm();
GridView1.DataBind();
}
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}
}
}