Asp.net CRUD operation with Ado.net

20 Oct 2016

Document by Ganesan – Ganesanva@hotmail.com – + 919600370429

– Create Database in SQL as “StudentDB”
– Create Table “StudentDetails” with the below snippet,

CREATE TABLE [dbo].[StudentDetails] (
[Id] INT IDENTITY (1, 1) NOT NULL,
[StudentName] VARCHAR (50) NULL,
[Age] INT NULL,
PRIMARY KEY CLUSTERED ([Id] ASC)
);

You can see the DB created in local SQL express as below,

– Create a new Asp.net Web forms Application as below
File –> New Project

Add the Connection string in Web.config as below snippet,

Add new Page as AddStudentDetails.aspx as below,

Replace the Below HTML code in AddStudentDetails.aspx file as below,

Replace the AddStudentDetails.aspx.cs file as below,

public partial class AddStudentDetails : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings[“DefaultConnection”].ToString());
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
BindGrid();
}
}
private void BindGrid()
{
btnSubmit.Visible = true;
btnUpdate.Visible = false;
SqlCommand cmd = new SqlCommand(“Select * from StudentDetails”, con);
SqlDataAdapter ada = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
ada.Fill(ds);
grvStudentDetails.DataSource = ds.Tables[0];
grvStudentDetails.DataBind();
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
con.Open();
SqlCommand cmd = new SqlCommand(“insert into StudentDetails values(‘”+txtStudentName.Text+”‘,”+txtAge.Text+”)”, con);
int result=cmd.ExecuteNonQuery();
if (result > 0)
{
Response.Write(“Inserted Successfully”);
}
con.Close();
BindGrid();
btnClear_Click(null, null);
}
protected void btnEdit_Click(object sender, EventArgs e)
{
Button btn = (Button)sender;
//Get the row that contains this button
GridViewRow gvr = (GridViewRow)btn.NamingContainer;
hfId.Value = gvr.Cells[0].Text;
txtStudentName.Text = gvr.Cells[1].Text;
txtAge.Text = gvr.Cells[2].Text;
btnSubmit.Visible = false;
btnUpdate.Visible = true;
}
protected void btnUpdate_Click(object sender, EventArgs e)
{
con.Open();
SqlCommand cmd = new SqlCommand(“Update StudentDetails set StudentName='” + txtStudentName.Text + “‘,Age=” + txtAge.Text + ” where Id=”+hfId.Value, con);
int result = cmd.ExecuteNonQuery();
if (result > 0)
{
Response.Write(“Updated Successfully”);
}
con.Close();
BindGrid();
btnClear_Click(null, null);
}
protected void btnClear_Click(object sender, EventArgs e)
{
txtStudentName.Text = string.Empty;
txtAge.Text = string.Empty;
hfId.Value = string.Empty;
}
}

Run the solution.
The Output will be below,

Click below to download the solution,
https://1drv.ms/u/s!ArddhCoxftkQg6h98mZAX_-Zv-6reQ

Maria academy

Asp.net CRUD operation with Ado.net

Document by Ganesan – Ganesanva@hotmail.com – + 919600370429

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