1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 using System.Data.SqlClient;
10 namespace WarehouseManagementSystem
11 {
12 public partial class frmCategory : Form
13 {
14 SqlDataReader rdr = null;
15 DataTable dtable = new DataTable();
16 SqlConnection con = null;
17 SqlCommand cmd = null;
18 DataTable dt = new DataTable();
19 ConnectionString cs = new ConnectionString();
20
21
22 public frmCategory()
23 {
24 InitializeComponent();
25 }
26
27 private void frmCategory_Load(object sender, EventArgs e)
28 {
29 Autocomplete();
30 }
31
32 private void btnSave_Click(object sender, EventArgs e)
33 {
34 if (txtCategoryName.Text == "")
35 {
36 MessageBox.Show("Please enter Category name", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
37 txtCategoryName.Focus();
38 return;
39 }
40
41
42 try
43 {
44
45 con = new SqlConnection(cs.DBConn);
46 con.Open();
47 string ct = "select CategoryName from Category where CategoryName='" + txtCategoryName.Text + "'";
48
49 cmd = new SqlCommand(ct);
50 cmd.Connection = con;
51 rdr = cmd.ExecuteReader();
52
53 if (rdr.Read())
54 {
55 MessageBox.Show("Category Name Already Exists", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
56 txtCategoryName.Text = "";
57 txtCategoryName.Focus();
58
59
60 if ((rdr != null))
61 {
62 rdr.Close();
63 }
64 return;
65 }
66
67 con = new SqlConnection(cs.DBConn);
68 con.Open();
69
70 string cb = "insert into Category(CategoryName) VALUES ('" + txtCategoryName.Text + "')";
71
72 cmd = new SqlCommand(cb);
73 cmd.Connection = con;
74 cmd.ExecuteReader();
75 con.Close();
76 MessageBox.Show("Successfully saved", "Record", MessageBoxButtons.OK, MessageBoxIcon.Information);
77 Autocomplete();
78 btnSave.Enabled = false;
79
80 }
81 catch (Exception ex)
82 {
83 MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
84 }
85 }
86
87 private void btnDelete_Click(object sender, EventArgs e)
88 {
89 if (MessageBox.Show("Do you really want to delete this record?", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)
90 {
91 delete_records();
92 }
93 }
94 private void delete_records()
95 {
96
97 try
98 {
99
100 int RowsAffected = 0;
101 con = new SqlConnection(cs.DBConn);
102 con.Open();
103 string cq = "delete from Category where ID=" + txtID.Text + "";
104 cmd = new SqlCommand(cq);
105 cmd.Connection = con;
106 RowsAffected = cmd.ExecuteNonQuery();
107 if (RowsAffected > 0)
108 {
109 MessageBox.Show("Successfully deleted", "Record", MessageBoxButtons.OK, MessageBoxIcon.Information);
110 Reset();
111 Autocomplete();
112 }
113 else
114 {
115 MessageBox.Show("No Record found", "Sorry", MessageBoxButtons.OK, MessageBoxIcon.Information);
116 Reset();
117 Autocomplete();
118 }
119 if (con.State == ConnectionState.Open)
120 {
121 con.Close();
122 }
123
124
125 }
126 catch (Exception ex)
127 {
128 MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
129 }
130 }
131 private void Autocomplete()
132 {
133 try
134 {
135 con = new SqlConnection(cs.DBConn);
136 con.Open();
137 SqlCommand cmd = new SqlCommand("SELECT distinct Categoryname FROM Category", con);
138 DataSet ds = new DataSet();
139 SqlDataAdapter da = new SqlDataAdapter(cmd);
140 da.Fill(ds, "Category");
141 AutoCompleteStringCollection col = new AutoCompleteStringCollection();
142 int i = 0;
143 for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
144 {
145 col.Add(ds.Tables[0].Rows[i]["Categoryname"].ToString());
146
147 }
148 txtCategoryName.AutoCompleteSource = AutoCompleteSource.CustomSource;
149 txtCategoryName.AutoCompleteCustomSource = col;
150 txtCategoryName.AutoCompleteMode = AutoCompleteMode.Suggest;
151
152 con.Close();
153 }
154 catch (Exception ex)
155 {
156 MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
157 }
158 }
159 private void btnUpdate_Click(object sender, EventArgs e)
160 {
161 try
162 {
163 if (txtCategoryName.Text == "")
164 {
165 MessageBox.Show("Please enter Category name", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
166 txtCategoryName.Focus();
167 return;
168 }
169 con = new SqlConnection(cs.DBConn);
170 con.Open();
171
172 string cb = "update Category set CategoryName='" + txtCategoryName.Text + "' where ID=" + txtID.Text + "";
173 cmd = new SqlCommand(cb);
174 cmd.Connection = con;
175 cmd.ExecuteReader();
176 con.Close();
177 MessageBox.Show("Successfully updated", "Record", MessageBoxButtons.OK, MessageBoxIcon.Information);
178 Autocomplete();
179 btnUpdate.Enabled = false;
180 }
181 catch (Exception ex)
182 {
183 MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
184 }
185 }
186 private void Reset()
187 {
188 txtCategoryName.Text = "";
189 btnSave.Enabled = true;
190 btnDelete.Enabled = false;
191 btnUpdate.Enabled = false;
192 txtCategoryName.Focus();
193 }
194
195 private void btnNew_Click(object sender, EventArgs e)
196 {
197 Reset();
198 }
199
200 private void btnGetData_Click(object sender, EventArgs e)
201 {
202 this.Hide();
203 frmCategoryRecord frm = new frmCategoryRecord();
204 frm.Show();
205 frm.GetData();
206 }
207 }
208 }
