Display previous and next words of searched string in ASP.Net GridView

Hi aginell4life,

You need to create DataTable and insert the records in DataTable.

Then, the DataTable will be used to populate the GridView.

Refer the below example.

HTML

<asp:GridView ID="gvDetails" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Description1" HeaderText="Description1" />
        <asp:BoundField DataField="Description2" HeaderText="Description2" />
        <asp:BoundField DataField="Description3" HeaderText="Description3" />
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        string searchedText = "red";
        string message = "I have a red cap in my bag. The color of my car is red blended with blue Could you lend me your red shirt.";
        string[] words = message.Split(' ');
        DataTable dt = new DataTable();
        dt.Columns.Add("Description1");
        dt.Columns.Add("Description2");
        dt.Columns.Add("Description3");
        for (int i = 0; i < words.Length; i++)
        {
            if (words[i].ToLower() == searchedText.ToLower())
            {
                string previous = string.Empty;
                string next = string.Empty;
                string previous1 = string.Empty;
                string next1 = string.Empty;
                if (i > 0)
                {
                    previous = words[i - 1];
                    previous1 = words[i - 2];
                }
                if (i < words.Length - 1)
                {
                    next = words[i + 1];
                }
                if (i < words.Length - 2)
                {
                    next1 = words[i + 2];
                }
                dt.Rows.Add(string.Format("{0} {1}", previous1, previous), searchedText, string.Format("{0} {1}", next, next1));
            }
        }
        gvDetails.DataSource = dt;
        gvDetails.DataBind();
    }
}

VB.Net

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim searchedText As String = "red"
        Dim message As String = "I have a red cap in my bag. The color of my car is red blended with blue Could you lend me your red shirt."
        Dim words As String() = message.Split(" "c)
        Dim dt As DataTable = New DataTable
        dt.Columns.Add("Description1")
        dt.Columns.Add("Description2")
        dt.Columns.Add("Description3")
        For i As Integer = 0 To words.Length - 1
            If words(i).ToLower() = searchedText.ToLower() Then
                Dim previous As String = String.Empty
                Dim [next] As String = String.Empty
                Dim previous1 As String = String.Empty
                Dim next1 As String = String.Empty

                If i > 0 Then
                    previous = words(i - 1)
                    previous1 = words(i - 2)
                End If
                If i < words.Length - 1 Then
                    [next] = words(i + 1)
                End If
                If i < words.Length - 2 Then
                    next1 = words(i + 2)
                End If
                dt.Rows.Add(String.Format("{0} {1}", previous1, previous), searchedText, String.Format("{0} {1}", [next], next1))
            End If
        Next
        gvDetails.DataSource = dt
        gvDetails.DataBind()
    End If
End Sub

Screenshot