Retrieving column data from database

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i want to retrieve one column of data from my table and i want to check that column data is contain the data that i enter in my textbox

string t = "select Name from Product";
SqlDataAdapter fd = new SqlDataAdapter(t, DbConnection.mCon);
DataTable dtcc = new DataTable();
fd.Fill(dtcc);
//if (dtcc.Rows[0][0].ToString() == TextBox1.Text)
if(dtcc.Columns[0].ToString()==TextBox1.Text)

i have table named product and one field named in Name

i have one textbox suppose i enter a name in that textbox i want to check that name is
occure in my database or not

Posted 13-Dec-12 5:30am

ravuravu

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minal21 14-Dec-12 0:40am

Asking same question again...here the solution for that question http://www.codeproject.com/Questions/508715/retrievingpluscolumnplusdataplusandpluscheckpluswi
(see solution 1)

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Abhinav S · Answer 1 · 2012-12-13T05:36:00

Solution 1

You would be able to do this better if you try using the value of the textbox in the query itself.
For e.g.

SqlCommand cmd = new SqlCommand("select name from Product where name like @City", conn);
SqlParameter param  = new SqlParameter();
param.ParameterName = "@Name";
param.Value         = textbox1.text;
cmd.Parameters.Add(param);
reader = cmd.ExecuteReader();

If the reader returns a count of 1 or more, a record with this name already exists.

Posted 13-Dec-12 5:36am

Abhinav S

Updated 13-Dec-12 5:38am

v2

Comments

ravuravu 13-Dec-12 11:42am

suppose i enter a name in textbox i want to check that the name is already in database or not if it not i want to add the name or i want to update the name with further details

Member 9581488 13-Dec-12 14:52pm

You may use TextChanged Event of textbox