Hello Friends,
On the Previous Post on this series, I have told you the code and procedure upto Connect Button. Hope you have been through it and enjoyed that. If not, please read below post before moving ahead. http://blog.johnbhatt.com/2012/10/list-all-sql-server-instances-in-combo.html
Today, I am going to share rest of the Code for Listing Database, Tables Inside Database and Columns and apply them with Operator and simply perform Select Operation from database and list the Result in DataGrid. Let's look the Design you have previously saw when making connection.



In above design,
In Database Combo, we will list all database from Connected Server. Then in Table Combo, we will list all Tables of Selected Database and in Column Combo all columns of Selected Table.

Lets Begin the Code. On Button Click and Successful Connection, we will load all database names in Database Combo. Actually we have did it earlier.
Lets have look at this Code:

comboBox2.Items.Clear();
                   if (checkBox1.Checked == true)
                   {
                       ConStr = "Data Source = " + comboBox1.Text.ToString() + ";Integrated Security = true;";
                   }
                   else
                   {
                       ConStr = "Data Source = " + comboBox1.Text.ToString() + ";UID=" + textBox1.Text + ";pwd=" + textBox2.Text + ";";
                   }
                   SqlConnection Conexion = new SqlConnection(ConStr);
                   Conexion.Open();
                   label9.Visible = false;
                   panel2.Visible = false;
                   button2.Visible = true;
                   panel1.Visible = true;
                   groupBox1.Visible = true;
                   DataTable tblDatabases = Conexion.GetSchema("Databases");
 
                   for (int i = 0; i <= tblDatabases.Rows.Count - 1; i++)
                   {
                       comboBox2.Items.Add(tblDatabases.Rows[i][0].ToString());
                   }
                   Conexion.Close();

This is code from earlier post.
Now Lets see the Code on SelectedIndex Change event of Database Combo (Combobox2).

private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {
            comboBox3.Items.Clear();
            SqlConnection conx = new SqlConnection(ConStr + "Database ="+comboBox2.Text.ToString()+";");
            conx.Open();
            DataTable tblTables = conx.GetSchema("Tables");
            for (int i = 0; i <= tblTables.Rows.Count - 1; i++)
            {
                comboBox3.Items.Add(tblTables.Rows[i][2].ToString());
            }
            conx.Close();
        }

Here we are creating Connection String Everytime, because, It is changing every-time. Now this code will list all the Tables inside Database in Table Combo (combobox3): Code:

private void comboBox3_SelectedIndexChanged(object sender, EventArgs e)
        {
            comboBox4.Items.Clear();
            SqlConnection conx = new SqlConnection(ConStr + "Database =" + comboBox2.Text.ToString() + ";");
            conx.Open();
            string tableName = comboBox3.SelectedItem.ToString();
            SqlDataAdapter adp = new SqlDataAdapter("select * from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME = '"+comboBox3.SelectedItem.ToString()+"'",conx);
            DataTable tblColumns = new DataTable();
            adp.Fill(tblColumns);
            for (int i = 0; i <= tblColumns.Rows.Count - 1; i++)
            {
                comboBox4.Items.Add(tblColumns.Rows[i][3].ToString());
            }
            conx.Close();
        }

Now above code will make all Columns of Selected table from database.
Now Directly move to Keyword TextBox textchange event which will load data as you type.

private void textBox3_TextChanged(object sender, EventArgs e)
        {
            string QueryCon = ConStr;
            if (comboBox5.Text.ToString() == "like")
            {
                QueryStr = "SELECT * FROM " + comboBox3.Text.ToString() + " WHERE " + comboBox4.Text.ToString() + " " + comboBox5.Text.ToString() + " '%" + textBox3.Text + "%'";
            }
            else
            {
                QueryStr = "SELECT * FROM " + comboBox3.Text.ToString() + " WHERE " + comboBox4.Text.ToString() + " " + comboBox5.Text.ToString() + " '" + textBox3.Text + "'";
            }
            TxtQueryBox.Text = ConStr + "Database=" + comboBox2.Text.ToString() + ";"+"\n" + QueryStr;
            SqlDataAdapter adp = new SqlDataAdapter(QueryStr, ConStr+"Database="+comboBox2.Text.ToString()+";");
            DataSet ds = new DataSet();
            adp.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0];
        }

This will load data in GridView automatically. Lets see a snapshot once again with Result.
All the Best, Enjoy....

Hi,

I was checking my Old Projects and Like to share a simple example with. Why not to create a SQL Management Application.

How we would do this? What is our objective?

Lets be clear.
We will List All SQL Server Instances available in Network into Application.
Then We will connect to Server using Windows Authentication or SQL Server Authentication.
After successfull authentication ,
We will list all databases in Instance.
After Database, we will List All Tables in Database,
After Database , we will list All Columns in Selected table.
We will place a Create button next to Database, Table list box also.
After selecting a Column, we provided a Filter (operator) and parameters in box.
Which will fetch data and display in DataGridView.

First we Designed a Following Screen.

In Servers List we have to Load All List of Servers and Connect. We have Options for Username and Password and also a Checkbox for Integrated Security (Windows Authentication).
Lets See the Code in Form Load.
Namespace to Include:

using System.Data.Sql;
using System.Data.SqlClient;

Now Form_Load Event Code

private void Form1_Load(object sender, EventArgs e)
        {
            panel1.Visible = false;
            groupBox1.Visible = false;
            label9.Visible = true;
            label9.TextAlign = ContentAlignment.MiddleCenter;
            SqlDataSourceEnumerator SerInstances = SqlDataSourceEnumerator.Instance;
            DataTable SerNames = SerInstances.GetDataSources();
            for (int i = 0; i <= SerNames.Rows.Count - 1; i++)
            {
                comboBox1.Items.Add(SerNames.Rows[i][0].ToString()+"\\"+SerNames.Rows[i][1].ToString());
            }
        }

Description of Above Code: We have placed rest design in Panel and Groupbox so we set that invisible on Form Load. Please Make a Conncetion First.. is Label9 and we set is Visible and aligned. Now main task is to List Sql Servers on Network. For this we used SqlDataSourceEnumerator class. In Next Line we take a DataTable and stored ServerInstances into that. Rest is Simple, We added all items into Listbox. Column 0 contains Machine name and Column 1 contains Instance Name. So we combined that at the Time of Adding to ComboBox Control. Now Click the Connect Button:

 private void button1_Click(object sender, EventArgs e)
        {
            if (checkBox1.Checked == true && textBox1.Text.Trim().Length > 0)
            {
                MessageBox.Show("Please Uncheck Integrated Security or Clear UserName!", this.Text + " - Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else if (checkBox1.Checked == false && textBox1.Text.Trim().Length == 0)
            {
                MessageBox.Show("Please Check Integrated Security or Enter UserName!", this.Text + " - Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
 
            else if (textBox1.Text.Trim().Length > 0 && textBox2.Text.Trim().Length == 0)
            {
                errorProvider1.SetError(textBox2, "Please enter password for Username = " + textBox1.Text + "!");
            }
            else if (comboBox1.Text.Trim().Length == 0)
            {
                MessageBox.Show("Please select Server from List. If You can not see any Instance in Servers Combobox, Contact your Network Administrator!", this.Text + " - Message", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
            else
            {
                errorProvider1.Clear();
                if (MessageBox.Show("Connection Successfull!, You are Now Connected to Server: " + comboBox1.Text.ToString() + "!", this.Text + " - Alert", MessageBoxButtons.OK, MessageBoxIcon.Information) == DialogResult.OK)
                {
                    comboBox2.Items.Clear();
                    if (checkBox1.Checked == true)
                    {
                        ConStr = "Data Source = " + comboBox1.Text.ToString() + ";Integrated Security = true;";
                    }
                    else
                    {
                        ConStr = "Data Source = " + comboBox1.Text.ToString() + ";UID=" + textBox1.Text + ";pwd=" + textBox2.Text + ";";
                    }
                    SqlConnection Conexion = new SqlConnection(ConStr);
                    Conexion.Open();
                    label9.Visible = false;
                    panel2.Visible = false;
                    button2.Visible = true;
                    panel1.Visible = true;
                    groupBox1.Visible = true;
                    DataTable tblDatabases = Conexion.GetSchema("Databases");

                    for (int i = 0; i <= tblDatabases.Rows.Count - 1; i++)
                    {
                        comboBox2.Items.Add(tblDatabases.Rows[i][0].ToString());
                    }
                    Conexion.Close();
                }
            }
        }

Description of Code: We Put some Validation and Message box to make some user friendly environment. After getting Proper Username and password, we make a Connection String and Used Username and password in Connection String. We build a connection, Make Servers List, Username and password and Connect button invisible and Disconnect button Visible. Then First we loaded all Databases of Selected Instance using Connection.GetSchema() method. How it look after connecting.
For now, its your turn to code something for this. I'll be back soon with Rest Part of This Program. Comments are Welcome. Feedback keep the Important Role in Improvement. So Expecting those from you. Happy Learning! John Bhatt
Glad to Know, Free to Share.....

Greetings from John!,
Hope you all are enjoying.
Friends I am back with a new thing for you. Today I am going to show you, how to make a Good Accordion Panel.

Do you know, what is Accordion Panel? You must have seen some tables or Div's in website, that are collapsing and expanding on just Click. You can also call them Collapsible Div or Table.

ASP.NET Ajax Tools make it so Simpler for ASP.NET. You just need to link AjaxControlToolkit.dll to your bin folder and use it in the Page.
Let's add a new Web Form in Solution, this is the Page, where you want to add your collapsible div or table what may contain anything.

Source Code for Design above is here.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Accordian with CSS >> P.Yar.B Complex</title>
    <%--<link href="Accordian.css" rel="stylesheet" />--%>
</head>

<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <table width="100%" border="0">
            <tr>
                <td colspan="2" align="center">
                    <h1>Accordian with CSS</h1>
                </td>
            </tr>
            <tr>
                <td colspan="3" align="center">
                    <asp:Accordion ID="Accordion1" runat="server" HeaderCssClass="accordionHeader" HeaderSelectedCssClass="accordionHeaderSelected" ContentCssClass="accordionContent" Width="490px">
                        <Panes>
                            <asp:AccordionPane ID="pane1" runat="server">
                                <Header>Hardwares</Header>
                                <Content>
                                    Mouse<br />
                                    KeyBoard<br />
                                    Monitor
                                    <br />
                                    Printer<br />
                                    CPU<br />
                                    Speakers<br />
                                    Camera
                                </Content>
                            </asp:AccordionPane>
                            <asp:AccordionPane ID="pane2" runat="server">
                                <Header>Operating System</Header>
                                <Content>
                                    MS Windows<br />
                                    Linux<br />
                                    Android<br />
                                    Mac<br />
                                    Unix
                                </Content>
                            </asp:AccordionPane>
                            <asp:AccordionPane ID="pane3" runat="server">
                                <Header>.NET IDE</Header>
                                <Content>
                                    Visual Studio<br />
                                    Visual Web Developer<br />
                                    SharpDevelop<br />
                                    MonoDevelop
                                </Content>
                            </asp:AccordionPane>
                            <asp:AccordionPane ID="pane4" runat="server">
                                <Header>John Bhatt</Header>
                                <Content>
                                    <a href="http://www.johnbhatt.com" target="_blank">Portal Home</a><br />
                                    <a href="http://blog.johnbhatt.com" target="_blank">Blog of P.Yar.B</a><br />
                                    <a href="http://media.johnbhatt.com" target="_blank">Download Center</a><br />
                                </Content>
                            </asp:AccordionPane>
                        </Panes>
                    </asp:Accordion>
                </td>
            </tr>
        </table>
    </form>
</body>
</html>

Now Let's See the CSS, what is on CSS.

.accordionHeader {
    border: 1px solid #2F4F4F;
    color: white;
    background-color: #2E4d7B;
    font-family: Arial, Sans-Serif;
    font-size: 12px;
    font-weight: bold;
    padding: 5px;
    margin-top: 5px;
    cursor: pointer;
}

#master_content .accordionHeader a {
    color: #FFFFFF;
    background: none;
    text-decoration: none;
}

    #master_content .accordionHeader a:hover {
        background: none;
        text-decoration: underline;
    }

.accordionHeaderSelected {
    border: 1px solid #2F4F4F;
    color: white;
    background-color: #5078B3;
    font-family: Arial, Sans-Serif;
    font-size: 12px;
    font-weight: bold;
    padding: 5px;
    margin-top: 5px;
    cursor: pointer;
}

#master_content .accordionHeaderSelected a {
    color: #FFFFFF;
    background: none;
    text-decoration: none;
}

    #master_content .accordionHeaderSelected a:hover {
        background: none;
        text-decoration: underline;
    }

.accordionContent {
    background-color: #D3DEEF;
    border: 1px dashed #2F4F4F;
    border-top: none;
    padding: 5px;
    padding-top: 10px;
}

Now Run the Page again. Lets See, how it looked. Check this at your machine. Best of Luck!