How to search data from 2 columns in a gridview?

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SQL-Server-2008R2

Hi guys!

I would like to get the records from the database that matches the IDs from the two columns of my grid view. What would be my query for it? Can anyone help me?

Posted 2-Oct-14 16:23pm

DarkDreamer08

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-10-02T16:53:00

Solution 1

Declare a StringBuilder.
Loop through the rows of GridView.
Inside the Loop, get the Column Value you want and append that to the StringBuilder.
After the loop, execute one query like

C#

"SELECT something FROM TableName WHERE Id in (" + objStrBuilder + ")";

Posted 2-Oct-14 16:53pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

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DarkDreamer08 2-Oct-14 23:05pm

It is somehow hard for me to understand your solution. Could you elaborate it more, please? I hope you extend your help regrading this matter.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 2-Oct-14 23:29pm

Which point?

DarkDreamer08 2-Oct-14 23:43pm

string builder :)

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 3-Oct-14 0:21am

Simple use string array. Forget builder.

Your final query should look like...

SELECT something FROM TableName WHERE Id IN (1, 2, 3)

1, 2, 3 are the ids.

So these Ids you have to get from GridView. So, you will loop through the Rows and get the column value inside the loop and add to the StringBuilder.

string[] myValues = new string[gv.Rows.Count];

foreach (int i =0; i < gv.Rows.Count; i++)
{
myValues[i] = gv.Rows[i]["ID"];
}

string allIds = string.Join(",", myValues);

Now you can use this with the query like...

string query = "SELECT something FROM TableName WHERE Id in (" + allIds.ToString() + ")";

Do u understand now?