Simple Gridview Webpart for Sharepoint

Open Visual Studio.....

Click on New >> Project >> and following screen will appear there select "Server controll" give any name you want to give :


then in the solution explorer 1 class file will be created give any suitable name to the class file ; here create a public class for the WebPart and then write following code to create a TextBox inside a Webpart where we will write our Queries to populate the Grid:

The pseudocode for that is as follows:
private string sqlquery;
[Personalizable(), WebBrowsable(true),WebDisplayName("SQLQuery"),Category("Data Properties")]
public string SQLQuery
{
get { return sqlquery; }
set { sqlquery = value; }
}

Here in the code above you can see the Text called as "Data Properties" that is the section for the name ; you can give what ever name you want for that section.

Now will create a childcontrol for this.
protected override void CreateChildControls()
{
base.CreateChildControls();
try
{
GridView grv = new GridView();
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter();
string strConnection = System.Configuration.ConfigurationSettings.AppSettings.Get("connection");
string sql = sqlquery;
//DataTable dt = new DataTable();
//dt = objDB.GetSQlResult(sql);
da = new SqlDataAdapter(sql, strConnection);
ds.Clear();
da.Fill(ds, "data");
Controls.Add(grv);
grv.DataSource = ds.Tables[0].DefaultView;
grv.GridLines = GridLines.Horizontal;
grv.CellPadding = 6;
grv.DataBind();
grv.HeaderStyle.BackColor = System.Drawing.Color.LightGray;
}
catch (Exception ex)
{}
}
this code will create the Gridview webpart now you can build the solution and you can give the output path of you build to the Bin folder of the sharepoint site or you create a dll with the strogn name.
1. double click on the properties >> signing and it will allow you to give the string name for that.
2. After that deploy that dll to the Windows >> Assembly and then right-click the dll and have a look at the properties there you will find PublicKeyToken.
3. Then go to the Sharepoint's Web.Config file and register this control as Safecontrol it will look something like this:


Here Assembly name basically name of the dll , then version and PublicKeyToken all the information you will find while you will right-click the dll , namespace is the detail you will see inside the .CS file. other are the default values.


Now open the sharepoint site and go to the Site settings >> Web parts >> New

There you will find your web part with the extension (webpart) and checked it and click on the populate gallery.


To check the webpart you create a new web part page and then click on the add web part , it will open a box there you will see your web part. add it to your page it will look something like this:


Here you will have an option of Edit the web part click on that and you will a contex menu on side there you will be able to see the "Data Propertie" under that you will find textbox ; there you can write your Query. and accordingly Data will get populated.




P.s : here i have assumed that you will have a connection string inside the Web.Config you can write the connection string dynamically also, by assigning some more Properties for the web part as we have created "data properties." , you can create some more..!!