CODEWITHSUNDEEP
c#asp.netsql-servergrid
Ãhmëd Säßrý
Ãhmëd Säßrý

Reputation: 53

SQL Datareader failed to bind data to GridView

protected void Button1_Click(object sender, EventArgs e)
{
    string query = "select * from aspnet_Users where userName like '%@UserName%'";
    connection.Open();
    SqlCommand command = new SqlCommand(query, connection);
    command.Parameters.Add("@UserName", SqlDbType.NVarChar).Value = TextBox1.Text;
    SqlDataReader reader = command.ExecuteReader();
    GridView1.DataSource = reader;
    GridView1.DataBind();
    connection.Close();
}

I am trying to use connected model to search a user's data in a table but the GridView is always, never fills with data.

Upvotes: 0

Views: 300

Answers (2)

Satinder singh
Satinder singh

Reputation: 10218

You can populate gridview using SqlDataAdapter, your code look like this 

        string query = "select * from aspnet_Users where userName like '%@UserName%'";
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = query;
        cmd.CommandType = CommandType.Text;
        cmd.Parameters.AddWithValue("@UserName", TextBox1.Text);
        cmd.Connection = conn;
        SqlDataAdapter dap = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        dap.Fill(ds);
        GridView1.DataSource = ds.Tables[0];
       GridView1.DataBind();

Upvotes: 0

Rahul Singh
Rahul Singh

Reputation: 21825

You parameter is acting as a string in your query because of single quotes you have include around the parameter. That is the reason it is not able to identify the parameter. Try this:-

string query = "select * from aspnet_Users where userName LIKE @UserName";

Then add it as parameter like this:-

command.Parameters.Add("@MyName",SqlDBType.NVarChar,40).Value ="%" + TextBox1.Text + "%";

Upvotes: 1

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