Dynamic column count in datagridview

Question

0.00/5 (No votes)

See more:

Iam making a dynamic count in datagridview, i've done this in the followed ways. yet i can't solve it, perhaps someone else will know how to do my execution right.

i want it to do the followed;

the columns have to be counted (as rows) e.x. there are 30 columns you need to count from 0 to 30 and check each column 1by1, now the datatable is disposed on the load procedure so we can't get values from the datatable anymore, just the datagridview which is populated.

if somehow i could solve the cells[f] (count the cells from 0 to 30) than it would be solved but apperently somehow i cannot.

its hard to explain but i'd hope you will understand it.

C#

int columnz = datatable.columns.count;
columns.Text = columnz.ToString();

C#

for (int i = 0; i < dataGridView1.RowCount - 1; i++)
{
    for (int f = 0; i <= Convert.ToInt64(columns.Text); i++)
    {
        if (dataGridView1.Rows[i].Cells[f].Value.ToString() == null)
        {
            dataGridView1.Rows.RemoveAt(i);
            i--;
        }
    }
}

i've also tried to do Cells(f.tostring())... i dont know what to do anymore.

Posted 20-May-14 23:15pm

misterd1

Add a Solution

Comments

Animesh Datta 21-May-14 5:32am

In your second loop you are not checking the column one by one . change the loop like this way

for (int f = 0; f <= Convert.ToInt64(columns.Text); f++)

and let me know

misterd1 21-May-14 5:58am

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll

(falls out of value index? may not be negative or is incorrect)

Animesh Datta 21-May-14 6:09am

where the error occured ?

misterd1 21-May-14 6:48am

Additional information: The index is out of range. These must not be negative and must be less than the size of the collection.

Animesh Datta 21-May-14 7:01am

This error comes when datagridview has no rows or no cells and you want to compare its cell with another value .

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

DamithSL · Answer 1 · 2014-05-21T00:59:00

try below code

C#

for (int row = 0; row < dataGridView1.Rows.Count; ++row) {
    bool isEmpty = false;
    for (int col = 0; col < dataGridView1.Columns.Count; ++col) {
        object value = dataGridView1.Rows[row].Cells[col].Value;
        if (value  == null || value  == DBNull.Value || String.IsNullOrWhitespace(value .ToString()) {
            isEmpty = true;
            break;
        }
    }
    if (isEmpty) {
        dataGridView1.Rows.RemoveAt(row--);
    }
}